Please don't think that I endorse this or that I think that Trump is anything but a disgusting idiotic asshole, but how is wearing a bandaid on your ear to support a person any different than the ever popular shaving your head in support of a friend going through cancer? Do these also look dumb? I mean that there are Trump supporters is bad enough in itself, but at least they show compassion to a person when something happens. So the gesture is only bad in context I guess.
I see, yet I feel that if this was another celebrity, it would not be called dumb. If Julian Assange had been injured I believe the reaction would be different. Even if the bandaid looked the same.
But, again, just to be clear - having overbearing sympathy with someone who promotes violence and hatred after he got away with a scratch is at best questionable. Supporting such a person and believing that they will do them good is awful and naive. Being said person is... morally wrong, to say the least.
Hairstyle is a big part of most people's identity, and a disease, or anyway it's treatment, strips it away. People shave because their hair falls out like their body is just giving up. With the hair goes the ability to keep your sickness private. Everyone you know, and most people you come into contact with will know you're going through something big, and they will treat you differently. You're not you anymore. You're sick. Friends or family might try to show you it's not such a big deal by shaving their own heads, but strangers won't do that.
Let's contrast that with trump. His body isn't failing anymore than it already was. This doesn't strip him of his identity. If anything it solidifies it. This doesn't change the way people interact with him. This doesn't divulge any information about him that wasn't already public, by his own choice. Given his obvious insecurities, we would know if his ears were one of them and they are not. These people have no personal relationship with him. This isn't about making him feel better. It's about these people's own identity and demonstrating group solidarity.