...how?
Do you really think that one hardcore misogynist or racist will be moved - even slightly - by a few hundred people with pithy signs, never mind all of them?
Protest is important, but so are achievable goals.
It's a bit like the debate about social media abuse, where a big chunk of people are demanding utopian-style 'no abuse ever, have my ID techdaddy' instead of achievable things like faster response times on abuse reports, harsher moderation for severe forms of abuse and the implementation of better self-moderation tools (personal word filters etc).
Real education happens at the small scale.
These protests will hopefully bring about changes in law
That will remove some bigots, by being criminals or repeated criminals, and, hopefully means associates of the bigots distance themselves for their own personal reasons (not wanting to commit a crime)
That ostracizing should hopefully cause a change in behavior.
It might mean strict justice, but no person should go unpunished for calling me a paki and no man should go unpunished for verbally assaulting a woman, leave alone the rest.
Lots of countries/empires have changed the mindset, the behavior, the religious beliefs of millions of people, why can't we?
Stick and carrot