On May 2, The Daily Caller published a story titled "Black Male Approval For Trump Doubles In One Week." This was two days before Trump brought up the subject at the NRA's annual convention.
The Daily Caller cited Reuters/Ipsos polling. On April 22, the weekly tracking poll had "Trump's approval rating among black men at 11 percent, while the same poll on April 29, 2018, pegged the approval rating at 22 percent."
The story pointed out that "Reuters only sampled slightly under 200 black males each week." But it didn't explain why that would matter when interpreting the results. And in any case, that nuance was quickly lost as the headline was shared tens of thousands of times on social media.
African American support for Trump has been low ever since he started campaigning. So this notion a sudden surge in support was enticing to pro-Trump commentators.
Charlie Kirk of Turning Point USA copy and pasted part of The Daily Caller story and tweeted, "The defection from the Democrat party is happening and they are moving to Trump."
The buzz continued on May 3. Liz Wheeler, a host on a small conservative cable channel called OANN, asked if the supposed bump in support was "the Kanye effect."