Is it permitted to destroy or steal property to prevent someone from doing an aveirah? Sources can be found here .

If one suffers from OCD and part of his treatment is to recite berachos only once, may he eat if he thinks he recited the berachah incorrectly? Sources can be found here.

When is someone categorized as a mechalel Shabbos b'pharhesya? What are the ramifications of being in this category? Sources can be found here .