system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5, Why Do the Bloods Hate the Crips?

I've seen so many programs on both gangs, but it seems like they never explain why they hate each other. It's been on my mind for a while--thanks!

EDIT: Thanks for the responses, everyone! This has always been an interesting topic to me and I really appreciate all the answers I've gotten.

EDIT2: After reading some comments, I realized that I may have worded the question incorrectly. It should be read as, "Why do the Bloods and Crips hate each other?". A majority understood this is what I meant, but I apologize for any confusion.
gpt
The short and sweete is that the crips are not all one gang.  They are an alliance of gangs.  But there is a good deal of violence and war within the alliance.  One day a gang within the crips pissed everyone off.  So they were picked on relentlessly, that gang approached the LA gangs who were not in the crips alliance and formed what came to be called the bloods. 

The answer is that they hate them because they have always hated them.  Like a family feud the orgins are less important then the various crimes that are commuted during the feud.