They were charged for hooliganism motivated by religious hatred, but hooliganism is the felony, ok?
They didn't commit hooliganism as there was no violence, threat of violence or any destruction of property. And even if we consider it's hooliganism they wouldn't be sent to jail considering no criminal record and kids. They would get suspended sentence or community work. The main point here is "religious hatred" - this is what gives the judge an excuse to send them to prison. How do you prove religious hatred motivation? Apparently for russian court their feminist views and LGBT support is a prove that they were motivated by hatred. If you don't think this is a terrible thing for human rights cause...Seriously, I feel ridiculous explaining all this.