Solidarity with a movement or organization is different than solidarity with a person.
Like everyone in your office might wear a company logo sometimes to show your affiliation, but if they all put on a bandaid everytime the boss got a paper cut it would seem a bit cultish.
Wearing something symbolic is not a strange way to show solidarity at all. It’s one of the most common ways to show solidarity.
Solidarity with a movement or organization is different than solidarity with a person.
Like everyone in your office might wear a company logo sometimes to show your affiliation, but if they all put on a bandaid everytime the boss got a paper cut it would seem a bit cultish.