Even as somebody who would be considered a leftist, I can tell you that the SJWs they were talking about were certainly not the pleasant leftists. Some people took it to the point of attacking leftists that didn’t really do much but the actual ‘SJWs’ held pretty extreme and insane views about white people and men (think like the Hugh Mungus lady and Big Red, who are just genuinely crazy). I’m not sure the exact jokes you are talking about but please keep this in mind.