A wave of racist text messages summoning Black people to report for slavery showed up on phones across the United States, prompting the scrutiny of the F.B.I.

The N.A.A.C.P. said that messages were received in nine states, and attorneys general in two other states reported the same on Thursday, two days after the presidential election.

The F.B.I. said in a statement that it was “aware of the offensive and racist text messages” and that it was coordinating with the Justice Department and other federal authorities.

The texts, which began as early as Wednesday morning, were reported across the South, and from New York to California. The office of the New York attorney general, Letitia James, said the messages had arrived in phones of middle school, high school and college students in New York City and its suburbs. In a statement, Ms. James called the messages “disgusting and unacceptable.”

Some examples of the messages were shared by recipients and reviewed by The New York Times. They followed a pattern: addressing recipients by name, telling them they had been selected to “pick cotton” on a plantation and ordering them to show up at a specific time to be picked up by slave handlers. Some included a reference to the president-elect, Donald J. Trump.

A spokesman for the Trump campaign, Steven Cheung, said in an email that the “campaign has absolutely nothing to do with these text messages.”

Mr. Trump stoked racism throughout his campaign in speeches that included false accusations against immigrants and inflated crime figures. He demeaned the intelligence of his opponent, a Black woman; repeatedly amplified a lie that Haitian immigrants were eating neighbors’ pets in Ohio and held a rally near the end of his campaign at Madison Square Garden that was rife with bigotry and misogyny.

The messages hark back to the most painful past for Black Americans. “Our executive slave owners will come get you in a brown van, be prepared to be searched down once you’ve entered the plantation,” one version said.

Derrick Johnson, the president of the N.A.A.C.P., said in a statement that the messages reflected how racist groups had been emboldened after Mr. Trump’s victory, and represented a sharp increase in “vile and abhorrent rhetoric.”

These actions are not normal,” he said. “And we refuse to let them be normalized.”

The N.A.A.C.P. said people had received versions of the message in Alabama, Maryland, Missouri, North Carolina, Pennsylvania, South Carolina, Tennessee, Texas and Virginia. They seemed to circulate heavily on college campuses, but were not limited to colleges, said Alicia Mercedes, a spokeswoman for the N.A.A.C.P. The University of Southern California said in a statement that students on its campus had received hateful messages, and the Ohio attorney general’s office also said it was investigating reports there.

Among other schools targeted were Fisk University, in Nashville, and Howard University in Washington, D.C., two historically Black universities. Howard is the alma mater of Vice President Kamala Harris and hosted her campaign’s watch party on Tuesday night and her concession speech on Wednesday.

E.J. Hunter of Chicago said that her daughter, a freshman at Howard, was at home when she received the message on Wednesday afternoon, as she prepared to watch Ms. Harris’s concession speech. Ms. Hunter immediately wondered how the sender got her daughter’s full name.

“Seeing this triggered every ounce of mama bear in me, to want to protect my child,” she said. “I know Kamala said we need to roll up our sleeves and get to work, but I didn’t think it was going to be, literally, on Day 1.”

At Spain Park High School in Hoover, Ala., at least two students received the messages, said Monique Norwood, a parent whose 14-year-old daughter got the text on Wednesday.

“When she read it to me, my mouth dropped,” Ms. Norwood, a retailer, said, adding that the texts terrified her daughter. Ms. Norwood offered a message to the president-elect.

“You were saying, ‘Let’s Make America Great,’ yet we have these things going on where children are being targeted,” Ms. Norwood said. “There’s no reason a 14-year-old should receive a message like that. Nobody should receive a message like that.”

Around 7 a.m. on Wednesday morning, less than two hours after the presidential race was called, Monèt Miller, a publicist in Atlanta, was still waking up when she saw the message on her phone, complete with her first name and the initial of her last name.

Ms. Miller, 29, said she wondered if the message had originated from someone she knew. The message felt, she said, like “something to make me feel cautious as a Black woman in America

God1000:
Trump’s America

the reality show begins

BlackfireX:
What if it is done by kamala Harris people after the resounding loss.

God1000:
Trump’s America

the reality show begins

God1000:
Trump’s America

the reality show begins

otipoju:


I tell you. It's gonna be a very long four years. Na still the black males that voted for Trump go suffer am pass.

God1000:
Trump’s America

the reality show begins

BlackfireX:
What if it is done by kamala Harris people after the resounding loss.

Nwaokunkpara:
Some idiots will do whatever it takes to paint the in coming Trump administration black without knowing that the real demons are the Democrats

Boogyman557:
Holly Gram Damm !


This matters no concern me.


We have more serious issues down here.


Na xmass we de enter so. This one way tins don cost for small MARKET and main MARKET.. hmmm

Na people way no get job i pity pass this period.


LITE UP my WEED in peace


WTF MAN!

BlackfireX:
What if it is done by kamala Harris people after the resounding loss.