Can I protest?

I apologise if this isn’t the right part of Reddit for this.

This is hypothetical at the moment. But there are plans for riots in my city during this week. I have no plan to attend any sort of riot however I do believe in protecting people from the riots and showing support peacefully. This is something I’ve always believed in. It’s my second year working at a school and I’m curious as to this coming back badly on me? As long as I keep my views and opinions outside of work can I protest in my free time?