@Joey
I will assume that by “pride” you mean LGBT movements and symbolism. As any other (social) movement and respective symbols, such as flags, they are part of the political spectrum. It would be a double standard to leave it out from that tag. Also, manifestations are a direct political tool for the common citizens after all (thinking about pride parades and rights demonstrations).
On the other hand I wouldn’t add politics to the standard filter. There are other tags that would cover non-peaceful political statements in art. Grimdark, grotesque, gore, rape, and whatever else there is in conjunction to political (e.g. “political, gore” which is probably covered by “gore” alone already).