Everyone has an orientation. It's natural for people to want to feel good about themselves, which often includes broadcasting their identity. At occasions like dances where people couple up, advertising one's orientation (including variation of ace for "not interested") can minimize awkwardness. So long as nobody uses their orientation to bludgeon other people, it's all fine.
It is fairly common for allies to join in pride marches, although not all marches are open to all identities. I think if they're banning some identities, that rather defeats the point of fostering unity.
Try this ...
Heterosexual Pride Flag
Everyone has an orientation. It's natural for people to want to feel good about themselves, which often includes broadcasting their identity. At occasions like dances where people couple up, advertising one's orientation (including variation of ace for "not interested") can minimize awkwardness. So long as nobody uses their orientation to bludgeon other people, it's all fine.
It is fairly common for allies to join in pride marches, although not all marches are open to all identities. I think if they're banning some identities, that rather defeats the point of fostering unity.