I try to do that in this book without preaching - to try to do as you just said that you really have to defend the First Amendment rights of everybody.
Don't wallow in brainstorming. Time spent fiddling with a business plan or filling up whiteboards with ideas is time that you could spend actually launching your business and seeing if the idea floats. Launching gives you real, solid feedback, instead of the imaginary 'what if' scenarios dreamed up