Are they actually worried that Putin is going to Stalin them? At the most he'd try to get rid of them, but not percicute them. This is the 21st century with social media, not the 20th with rumours about a place no one knew about and was far away.
He's got a war on Homosexuality right now within his country, with strict anti-gay laws in effect in order to curb 'gay propaganda' from spreading in the country. It was quite prevalent during the Winter Games, and hence why the games themselves drew such criticism before they even had a chance to begin. It would be no surprise if he didn't start profiling 'undesirables' within his territory, and finding ways to 'rid them out of his sovereignty'...
Amazing how uninformed you are with what's going on in the world, Choco...