Earlier quoted context omitted.
Polarization has nothing to do with the craziness of ideas, but the lack of a middle ground. Polarization has to do with the clustering of beliefs. If attending BLM protests makes you less likely to attend pro-life protests, that is polarization. The strength of that correlation is the amount of polarization. Acceptance of Inter-racial marriage is a topic that was once far more polarized. That depolarization is exact…
Interracial marriage did not just slowly creep in until it was considered acceptable. It had to fight its way into the conversation, then have champions who were willing to take great risks and accept painful consequences for promoting these polarizing beliefs. 'Depolarization' on this subject is not something that just happened, nor it an effective strategy for change. What happened is that one side LOST and their v…
As long as the issue is polarized, then it gains network support from the issues with which it is polarized. That process of standardization that you describe as "winning" happened because the issue became decoupled from stances on other issues and was no longer predictive of other views.
To put this in more concrete terms, I am not saying that you should not challenge racism and racists. I am saying that in pursuit of that goal you should actively push back on assuming someone is racist because of their political views.