They have a humorous name, but what is happening to them is not so funny. According to the article:
The band has made a name protesting both the government and the Russian Orthodox Church and they took over a church pulpit with a protest.They were charged with "hooliganism motivated by religious hatred" after Orthodox Church Patriarch Kirill denounced them as an affront to all religious Russians and demanded the most severe punishment possible under the law.
Found a video of it here:
A little silly perhaps, but they don't deserve years in prison over this.