There are almost as many things we should be intolerant of as there are not.
Crime as an example. Laws are really little more than a list of things we shouldn't tolerate. Bad behavior in general is something we shouldn't tolerate.
The fact is we are far too tolerant and it is coming back to bite us. Look at the education system, once one of the best in the world and now a disgrace largely because we tolerate bad behavior.
The national debt, and state debts, because we tolerate outrageous spending and corruption.
Being tolerant is often just an excuse for being weak.