The actual definition from Merriam-Webster Online is "a person who is obstinately or intolerantly devoted to his or her own opinions and prejudices; especially : one who regards or treats the members of a group (as a racial or ethnic group) with hatred and intolerance". This means if a person has no tolerance for beliefs other than their own. However, in the modern day, bigot is used to refer to those who oppose social liberal agendas, but especially those who oppose gay marriage and/or think same-sex intercourse/sexual acts are immoral and should not be practiced. Also used to refer to Christians.
Rational Person: I think that Al Qada could qualify as bigots. They killed 3,000 American civilians and the World Trade Center because we don't conform to their beliefs.
Liberal: What!? You don't approve of gay marriage. You are obviously a bigot and oppose it for no reason other than hate for gay people.
A law which states that: given sufficient time, some internet user, somewhere, will have posted elaborate arguments for one person, thing, idea or phenomenon being the cause of all of the world's modern day problems. The argument is likely far-fetched.
Joe: Man, the Middle East is getting crazier every day.
Matt: I read a great article the other day about how Middle Eastern instability is primarily caused by Western expectations of gender-role conformity. That also causes income inequality, Donald Trump, and government corruption.
Joe: The only thing you just proved is that Stack's Law of Universal Causality is true.
Jessica: OMG! Why are there so many starving children in Africa.
LeJuana: You see, when you get down to it, Islamic extremism is the primary cause of global hunger, and our poor stock-markets!
Jessica: How do you know that?
LeJuana: I read a tell all article on it at WorldWithoutReligion.com!
Jessica: That's just Stack's Law of Universal Causality at work.