If your roommate is Maoists or Maoists supporter.. it's entirely up to you deal the situation provided you hate Maoists for all they have done in Nepal.

Ask him to look for other place.. if he would not, then you better leave that place and move to another place. Do not ever be in contact with that person. But make sure you tell him/her that US is not the place for him coz due to his affiliation with Maoists in Nepal he could get into trouble... just tell him the truth that his heaven is in Nepal.. (i don't understand, in the first place, why maoists and their supporters are living in USA).

In Nepal, lot of Maoists supporters simply became maoists supporter to get easy life without having to get into trouble. (recent example is artists joining Maoists). Coz they have no ethics/mojo to voice against Maoists.

It's not the problem with Maoists.. but actually with the nepalese people who yielded to Maoists.