The biggest psyops of them all. Is the fact that they manipulated all westerners to actually believe that there consistently are two equally sized groups in society, one called left and one called right that have different interests.
In all other situations in life one argument will prevail over time. People have the same dreams and needs for work, safety and freedom.
This is called "divide and conquer", keep people occupied with internal division, daily struggles, deceptions and manipulative entertainment. So, their eyes never get focussed on the real causes to their hardship.