Live and let live. If somebody wants to act like a genius or a clown, let them. “Why?” You may ask, and the answer is simple, it’s far easier to agree with them than it is to challenge their opinions.
Remember: It’s far easier to walk around dog shit than it is to clean it off your shoes.
It’s also worth remembering, if you believe your opinion is so important that you’re unwilling to let other people have theirs, you may fall into one of the fore mentioned groups.
Learning to control what’s within your power to control is the only way to find freedom. If you’re wise, you can control your conscious thought, if you’re not so wise, your thoughts will control you. Trying to control anything else is fighting a battle you cannot hope to win.
If you want to be free, you have to let everybody else be free too.