"HATE ALL U WANT BECUZ I GOT A GRAMMY. Now! That's the ultimate F--- OFF," Brown, 22, tweeted.
Brown won Best R&B Album for "F.A.M.E." at the Grammys, capping a three-year comeback following his assault on then-girlfriend Rihanna. Brown also performed his new single, “Turn Up the Music,” during the star-studded ceremony.
Brown's Grammy win and return to the national stage was criticized by musicians and others alike on Twitter.
"Chris Brown twice? I don’t get it. He beat on a girl,” Grammy-winning singer Miranda Lambert tweeted.
Actor Wil Wheaton of "Star Trek: The Next Generation" fame wrote: "Everyone who apparently forgot what Chris Brown did to Rihanna should read the police report on exactly what he did."