Why are Clinton supporters more racist and more aggressive than Sanders supporters?

I am always fascinated by the ways belief and reality diverge. This year, Clinton supporters promoted the "Bernie Bro" narrative about Sanders supporters in the same way that in 2008, they promoted the racist "Obama Boys":WOW. Before the "Bernie Bro," Clinton supporters created the "Obama boy." No, seriously. But the reality is that "Bernie Bros" are, probably like the "Obama Boys" before them