Were humans selectively bred to be more tame?

No.11374280 ViewReplyOriginalReport
I saw this post on /pol/ and it really got me thinking.

I'm not a biologist or anything, so I can't really speak much about it other than to say that it makes sense to me.

Can somebody with more qualifications chime in and either confirm or debunk this?

Also here's the video he linked

https://www.youtube.com/watch?v=2sPNYfGmxyA