True, but before about 10 years ago, the reaction to that was mostly "well, those people are wrong in everything, but they right in this - this is free speech, and we value it, even if we hate those people". Now the reaction is "well, everybody knows "free speech" is a code word for "Nazi" so no wonder...".
You have that backwards.
White supremacist rallies have labeled themselves as "free speech" rallies in an attempt to normalize their cause.
However, exercising one's free speech rights by rallying for a cause does not automatically make that cause synonymous with supporting "free speech".