Yes, it is utter nonsense to say that Pride is a celebration not a protest. Just because you hold an opposite opinion to reality doesn't make your opinion supportable.
As for your question, not sure what the point of it is but yes, protest should be allowed?
So yes , if people move in lary numbers to support or fight a cause , you agree they are right.
The relevance is , in 1919 this country marched against black people. Rioted , attacked , vandalised etc. All in great number. By your very own definition, they were right to do it. You say protest should be allowed, your great grandparents fought against what you believe to be true now. As they felt so strongly about it in their numbers , their protest , their opinion is therefore right.
And more to the point, you say just because I have an opinion it doesn't make my argument supportive. What if there were hundreds of me disagreeing, would my opinion then carry weight? Is that how this works now? Opinions that don't fit the party line are not supportable? So an admission to having to agree is that?
The fact is, having an opinion isn't allowed anymore. You have been proof of that. Just because I don't regurgitate what everyone else is saying you are so quick to dismiss what I say. In fact , I have seen people on this site attacked by other posters for offering a different opinion and it's like that everywhere now.
I can see where all of this ends up. By everyone all thinking the same thing , attacking anyone who disagrees, supporting any movement, where this all ends up is exactly what people deserve. It starts with pulling statues down, consider where that ends up every time people get told to care about something , because next month it will be something new.
There once was a time where having an opinion was a thing, now it's hive mentality that is no better then 100 years ago, attacking people who disagree. All because you believe you are all right.
Like your great grandparents did 100 years ago.