Margarito could have quite literally killed someone by loading up his wraps with plaster who-knows-how-many times. In essence, once he started sweating he was basically punching his opponent with concrete gloves. He received a suspension that wasn't nearly long enough (should have been a lifetime ban, if not criminal charges given the danger already inherent in the sport), continued to deny he knew how his wraps got loaded with the stuff, and not only failed to ever show any contrition but also continued on with that smirking punk persona of his. He should have had to forfeit every single win on his record if they were going to allow him to return. Cheating inflated him from an average boxer to a relevant one, and he may have ruined some careers and lives along the way.
Sosa was a massive fraud. He juiced to the point that he went from a 160-pound scrapper to a 230-lb. behemoth who hit 600 homers. And used a corked bat on top of it all. I recognize that he has plenty of company in the P.E.D. regard (Bonds, McGwire, A-Rod, et al), but I despised the way Sosa played himself up during the 1998 Home Run Race, portraying this false front that he was merely trying to help his team win the division and didn't care about the record, all with that false gee-golly-whiz "earnest" team player nonsense. The reality was that he was swinging for the fences in every at-bat. Every St. Louis fan despises him.
Kaepernick, of course, enjoyed being a part of the false narrative that the police are evil racists and that disrespecting the country and its servants was a brilliant move. He then took the next step of hanging out with terrorists like Linda Sarsour, wearing socks with pigs in police uniforms, comparing the police to slave patrols, and trashing White America (always funny, since he's half-white and only has the opportunities he does because he was raised by white adopted parents). He can't get enough ostracism to make me happy.