From litterally every bad communistic country that has been: Sovjet Russia, Cuba, etc. Not hard to find. I am living in a socialist country, not that far away from communism. My grandfather lived to experience communism. It is not as nice as you guys think it is. It is a Utopia, where the powerful, gets all the good stuff, and will do everything in there hand, to make sure no one gets a dime, more than everyone else. (Rough police, wide survailance, etc.) It always ends up with NO FREEDOM. Which I am widely against. There is no proof in the world, that communism works what so ever.
I am not saying capitalsm does neither. That is why liberal socialism is a thing. That works. (scandinavia)