You dismissed the idea that @borgqueen 's neighbour might have put up a Union flag as a political act. The implication is that due to their ethnicity, they couldn't possibly be part of the current grassroots political movement which the flags represent - driven by people who feel that none of the existing political parties are listening to their concerns and priorities. It's a movement separate from Reform, but Reform comes from the same roots.
You don't like those priorities - and you are contemptuous of the people who hold them - so you pretend it's racism. Perhaps you're so unable to consider any viewpoint other than your own that you actually even believe it is.
There are some racists involved in the protests - and Reform - yes. Just as there are some anti-semites in Labour. But in both parties, most supporters aren't.
Personally, I wouldn't vote for either Reform or Labour. Firstly, I don't think either have much of a clue about economics. But also, I don't trust the leadership of either not to use populist racism and anti-semitism respectively for their own benefit ('Your' party has probably siphoned off most of the anti-semites, but I think it runs too deep to be completely gone. Although Starmer has obviously tried) Both are as bad as each other.
But I don't judge people who vote Reform - or put up flags - as racist. Surely you don’t really believe that 28% of the UK have suddenly become racist, do you?!?
And I don't judge people who vote Labour as anti-semitic.
I recognise that people have different political opinions to me. That they might support a political movement like Labour or Reform for genuine reasons.
That respect for others peoples political opinions - even when they are different from your own - is fundamental to a democracy. You should try it.