Humans do horrible stuff to each other in the name of ideology. Systems are just one of the ways they rationalize it.
Heavens know how many died during the Great Leap Forward. Estimates are between 30 million to 55 million.
You can see it yourself if you look closely enough, go to let's say Vienna, and then go to Bratislava or further east. Even after 34 years. I don't mean financial aspect of difference, I mean everything else that makes healthy society thriving.
In capitalism, you always have freedom of thinking, traveling, freedom to not have a job for example. You can bash it as much as you prefer, and its leaders. Your parents won't be put in gulag or uranium mines for 10 years because of that. My friend, you frankly have no idea what you write about...
Just point out well known facts, in balanced manner, and that's more than enough.