I will say Libertarians (big shock) for one big reason.
We promote the idea of freedom. Real Libertarians accept the other political ideas. Matter of fact...we welcome them as fresh debate adds to a growing society.
I understand that not everyone will agree with my views. Some will see them as radical...others will dismiss them as too old for our modern world. I get that and I accept their views. It is their choice and that is what makes our country good.
We may scream to the rooftops about how ridiculous some views happen to be, but we are tolerant of people expressing their agreement towards it. Like all other groups...we are not immune from the bigotry of the political spectrum.
If we Libertarians are going to promote the ideas of liberty and freedom...we shouldn't get caught up with intolerance because it directly contradicts the message we are giving. I have to remind fellow Libertarians of this, but I believe a lot of us are more tolerant than other political parties because of our message of liberty.