Unfortunately, everyone seems to be keen on justifying their own intolerance with the supposed intolerance of the other.
If all it takes people to be freely intolerant is to convince themselves that the object of their intolerance is intolerant too, intolerance spreads everywhere.
Yeah, it's not like we have actual Neo Nazis marching in our streets chanting things like "The Jews will not replace us!". It's just a bunch of SJW calling everyone intolerant so they can be intolerant themselves.
If all it takes people to be freely intolerant is to convince themselves that the object of their intolerance is intolerant too, intolerance spreads everywhere.