Are sex offenders a protective class

[Gina Nicolas]

Good evening all,

I have a 2 units property that is managed by a property management company. I have received  a text from my 1st unit tenant that a sex offender is living in the 2nd unit. First floor tenant is panicking because of his 14 years old son living with him. I have contacted my property management company and I was told that sex offenders are a protective class and they cannot get rid of him just because he is a sex offender. I am a  little confused because, I thought that sex offenders ARE NOT a protective class. Also if they are, can I get sued if anything happens to first tenant's son. Has anyone dealt with that situation. All input are welcome