It is never okay to punish others for their beliefs. You outlaw drugs because it is harmful to the body, you outlaw prostitution because it is unhygenic and inmoral. But outlawing extreme religion is stopping people from believing in their so-called God in their hearts. It is never moral to do so. The government's obligation is to ensure the well-being of all its citizens, under circumstances in which a person's belief doesn't hurt others, the government has the full obligation to allow such.
If we define extreme religions that are really unacceptable, and keep practices that are really against the general belief, and we can even describe the practices as crimes, why can't the government outlaw the extreme religions. As the role of the government is to protect the safety of citizens and civilians, there is definitely a need to outlaw extreme origins. "Sillykid0609". He put it into a very well perspective. Extreme religion should be outlawed. It does bring a dangerous threat to others. It's not only dangerous but it is also pretty dumb. It may be their right to believe in what religion they want if they live in the United States, but the United States citizens safety is their first priority.