Racist jokes

I make quite a good bit of racist-themed and stereotyping jokes. They've apparently become a frequently-used tool in my arsenal of jokes. I don't know why I enjoy them so much; playing off of ignorant people's generalized perceptions of particular races/ethnicities/sexualities..
the thing is when I hear comedians making racist jokes e.g. "you white ppl etc etc" or "you black ppl etc etc" I always groan and wonder why these people have to continuously use these kinds of jokes. Yet I perpetuate them myself.

One of my best friends is black as well and he's usually at the receiving end of many of my jokes. As well as my indian friends. (I don't have any close white friends sadly.. I say sadly because I wish I did so I could balance the jokes out). I end up feeling bad after I reflect on the jokes though and always think that I should cut down or stop altogether. I definitely am going to try to cut down because I may slip up and say something around the wrong people some day. Not everyone can appreciate the humour like my friends can.

'Black'(afro-trinis I've heard someone use) people and friend chicken/liquor, rap culture etc
Indian people, especially girls and common-law behaviour. Making curry for their husbands while they cut cane, shot puncheon like water and beat their wives, forcing them to leave and subsequently drinking gramaxone
White people and a seemingly genetic inability to lack rhythm, innate need to oppress everyone else
Jews and killing Jesus
Catholic priests and molesting little boys
Muslims and terrorism

and the list goes on.. I need to sit down and analyze why it is I find these jokes so funny at the times I make them (because if someone said them seriously I'd be offended and tell them something). I'm an advocate for blending of class and race divisions; of there being only one true 'race' and that of the 'human race' (sounds cheesy but I've read anthropologicial and psychological evidence that supports this theory) and yet I still make these jokes that divide and separate these people. Why? And I'm not afraid that I really am racist underneath it all and the jokes are ways for me to express these socially-negative feelings because in serious situations, I'd be offended by racism and the like. I've witnessed a 'dougla' man stand up in a QuikShoppe and cuss and carry on about 'them damn nigger people' (I can't even type that word without feeling a weird chill in my body) and how his mother was dougla and hated black people as well. All I wanted to do was to cuss him out and roll but I didn't want to make a bigger scene so I just walked out quietly. I love my dark-skinned brothers and sisters. I love my brown-skinned brothers and sisters. I love my hindu and muslim brothers and sisters. I love my catholic and jewish brothers and sisters.. and yet I poke fun at them all. Well I'll cut down anyway and hopefully figure out what about the jokes amuses me.

new thought.. perhaps I used my humour as a way of dealing with real world ignorance of these issues. As in, I use the jokes to mock real-world ignorance of my comedic subjects to show my dislike and disdain for serious belief in these phenomena... such as americans as their typecasting of the muslim terrorist. hmm.. perhaps