Obviously there is danger in generalizations but essentially people who like to act swiftly flock to the right and people who like to think and observe before acting tend to flock to the left.
It's no coincidence that the thinkers I'm society tend to be at universities. There isn't some political conspiracy of universities to make everyone into socialists but naturally there are more lefties at universities because it's a place of thinking.
2 points on this
First, they only recruit like minded people, this is what happens in academia today, conservatives are not welcome, especially in the US
Second, once there an echo chamber from only recruiting like minded people, it leads to extremism within that boundary.
You need an overlap in society on political views, the overlap in the center is what prevents society swinging to the extremes of either end. If there is one forced line, like the left are trying to enforce now.. it leads to some nasty **** eventually
Stalin's Soviet Union, homogeneous political ideology, and look how it went
Hitler's Germany.. ditto
Mao's china.
Even Venezuela
People will always try out do each other, and if the entire apparatus is left, there are people vying to be the leftist of everyone.
It also leads to sports team like politics, which sees both left and right echo chambers completely ignoring the filth on their own side as long as they "win".
eventually what happens is though, with ideological echo chambers is, they consume themselves eventually, most often with catastrophic results. The later day Nazis were hanging Germans in the streets toward the end of the war. The soviets turned on their own people many times, constantly and China was a 10s of millions of people blood letting
We see people being denounced today, all over social media and MSM hit pieces, the court of faux moral public opinion is in full session.
Just like in Hitler's Germany, and Stalin's Russia, one accusation is enough to ruin your life, though there are no gulags, just yet anyway