It&#x27;s the same that ultra right or neo conservatives have more in common with ultra left or communists or ultra religious groups that go for political power. It&#x27;s the extreme that makes them understand and appreciate eachother (or their cause) better.<p>It&#x27;s not that they like or support eachother, but knowing how the other thinks makes a difference. For them it&#x27;s much more difficult to understand how moderate left or right works and can be influenced. There&#x27;s a good chance that they fear &quot;moderate&quot; people more than those on the opposite end of their thinking, simply because they don&#x27;t understand them.