This is going to sound a bit counter-interutive, but sometimes protests against something backfire even if its what it says in the torah.
There have been protests against chilul shabbos and they dont work and frequently backfire. Protests against movie theaters open shabbos cause more people to go. Rav Elyshiv told people to protest a movie theater in Netanya open on Shabbos and its still open to this day.
Is it worth to protest a Movie theater on Shabbos if more people will go because of the protest (against ‘Relgious Coercion”)
Protesting an “Alternative Lifestyle Parade” might cause people not only not to listen to your view, but cause them to insult the torah as well. They might be quiet if you say nothing, but quote Vayikra and then they will curse out the torah as well and insult it. Causing even bigger chilul hashem