Excellent public transportation is beautiful! Unfortunately, people do get shocked by hypomanic/manic fervor and even just normal happy fervor. However, if you feel joyous, be joyous!

I agree that you must tell your psychiatrist and therapist what you're experiencing. Also, trips while manic are generally a bad idea. I know from experience. My psychiatrist always discourages them.

I think racists hurt themselves and their nations. Not just the objects of their hate. "Hating is not fair!" I even wrote a blog post by that name. I've done some advocacy work that included topics like fighting mental health stigma and racism. That's a good way to do so.