'He didn't even call the Charlottesville murderer that': Internet unloads on Trump for calling Kaepernick an SOB
San Francisco 49ers Colin Kaepernick holds a press conference on Sept. 1, 2016. (Deadspin)

After President Donald Trump alluded to controversial former 49ers quarterback Colin Kaepernick a "son of a b*tch" during a rally in Alabama, Twitter exploded.

"Trump used harsher language to describe Kaepernick than he used for the Neo-Nazi who killed Heather Heyer," Christiana Mbakwe‏, a writer for "The Daily Show with Trevor Noah," tweeted. 

"Colin Kaepernick is a real patriot and a fantastic human being," another user wrote. "Donald Trump is a tool and a traitor."

Others, like activist-journalist Shaun King, mused about how unusual (and dangerous) it is for a sitting president to use that type of language.

"The POTUS said son of a b*tch on primetime," one user noted. "What a time to be alive."

Read some of the best reactions below.