Can I break the lease?

State: Michigan

I recently got into an apartment lease with random roommates who I didn't know beforehand. I met them and they seemed nice and all, but the day of moving in I found them smoking pot inside the house. I told them I was uncomfortable with that and told them put it out or do it somewhere else. My lease is by the bed, and so each person is responsible for his own rent. I read through the lease before signing and it did say multiple times that (three times infact) that anyone under the property doing illegal activities are breaking the terms of the lease and can be removed or proper action may be taken. I really don't care who leaves, either me or them, but am I able to break the terms of the lease due to this situation?


I feel like I'm leaving out important information, but I'm frustrated!