Al Sharpton says he's got Jemele Hill's back -- and if ESPN fires her over her anti-Trump tweets, he'll lead a boycott against the network.
The Rev. tells TMZ Sports he's furious with the White House and press secretary Sarah Huckabee Sanders for saying Hill's tweets are a "fireable offense."
FYI, Hill strongly tweeted against Trump on Sept. 11th ... calling him a "white supremacist" and "the most ignorant, offensive president of my lifetime."
Sharpton says Hill has every right to express her political views without fear that the government will call for her job.