Here are some sources you can use
http://www.advocate.com/world/2014/11/21/it-gets-worse-russias-kremlin-targets-lgbt-youth-support

https://www.lifesitenews.com/news/putin-homosexual-groups-should-leave-kids-alone

https://www.hrw.org/news/2016/01/14/dispatches-jail-time-being-gay-russia