Property manager accused me of being a racist landlord

I was presented with the possibility of renting my condo to a person that has bad credit. I agreed to do so by giving the tenant a monthly rental contract and requested the age and race of the person wanting to do so. The property management company accused me of racist and breaking the law for requesting this information but mostly it appears that the monthly contract was something he did not want to do. Is it unlawful to request this information when you are giving a break to a person with bad credit?