Yeah, Naaah.
I don't know other people's definition of intolerance but there is always a line that can't be crossed in that regard. Hanging a banner with a slogan that has been co-opted by white supremacists is not the place where people should be touting a tolerance argument. White supremacists by their very nature oppose tolerance.
If you spout a divisive agenda and preach intolerance, then you've crossed that line. Free speech doesn't excuse blatant racism.