Those like the OP need to continually jab at the opposition for one reason only.
They know they have an audience to bait.
They take enjoyment only in the bait/anagonize aspect only.
They are emboldened and inspired to action only because of their anonymity as "guest".

Thank God:

>they are clearly in the minority.
>they do not act/behave/talk/disrespect in this manner in person.