This mindset of “if you disagree then your clearly __” you can fill it with what you like. Right-wing, racist, etc.
In what world are you gonna be able to enact change without disagreeing with some one?
You may be surprised, when you have more in common with the “enemy” if you just listen and understand their points.
Challenge their ideas but be empathetic. Your not going change anything with writing of ≈40% of the population in the U.S.
It’s not left versus right, It’s rich versus poor.