Laci Mosley, a Black woman, was cast as the character of Harper in the upcoming "iCarly" reboot. She said she received a barrage of hateful, racist comments on social media. Experts explain how widespread this behavior is, and why it remains pervasive. A writer on the upcoming "iCarly" reboot tweeted that one of the stars of the show was being targeted with hateful, racist comments. "Hey #iCarly tweeps!" Franchesca Ramsey, who has over 230,000 followers, wrote on May 17. "I'm seeing a looooot of racist abuse being hurled at one of our stars & I'd love if you'd join me in calling it out when/if you see it." The tweet was widely shared and received over 12,000 likes.