Rude in-laws

Okay here goes...
My DH and I have been living with his parents and we have just started our own business. We actually haven't launched yet, because we were trying to get our website up and get flyers done. The only real thing to get done now are the flyers. We have tried to explain this to his parents. Big fact is they hate me, they are extremely prejudice and somewhat racist.
We have been helping them out, and buying groceries, and taking care of their home since they are not home most of the time, and not to mention acting like parents to their other two kids, who need guidance. In the past, my DH has taken out loans and given them thousands of $$$, and NEVER asked to be repaid.
I have worked a job 1/2 the time I have lived with them, but since the business start-up I have not had the money to pay for daycare for my new DD. I am FULL-TIME mom and I get called lazy because I don't have money to pay for daycare or work. I was helping them out at their business for free, and now am told not to come back there.
Then get up this morning and there is a note telling us that we are lazy, and both need to get jobs and get out of their house. The only reason we were staying here was until out business started making a profit, and like I said the only thing left to do is make flyers. They forget we have spent most of our time doing their work around the house, and running their errands and taking care of their kids.
This just doesn't seem right and frankly, I'm pissed. I just keep asking myself do I have a right to be pissed. It is their house, but we would never throw them out if they were trying to accomplish something.