Pretty much he's black and doesn't like other black people getting shot.
He decided to protest by kneeling during the anthem. This is damn near treason to some, no big deal to others.
The afro bothers a lot of people.
He donates a large portion of jersey proceeds to communities at risk. This pisses people off that don't like him.
He wore socks with pigs (cops) on them...I think.
This pissed people off.
Then he messed up by wearing a shirt that had Castro on it. Bad move, worse explanation by him.
No sure why he's a hypocrite, but that's what the guy said.
This is purely a cliff notes version.