Presumably the store could have had their security remove the protesters, but allowed them the time to make a peaceful protest. Freedom of speech, lots of people are striking, protesting currently over pay pension and clean air zones. I think teachers striking and children missing lessons is a bigger problem to report than a peaceful protest in a supermarket. After schools closing for COVID hasn't this generation of school children had enough disruption to their education. Perhaps teachers could protest outside of the lesson time, maybe on a weekend or a teacher training day 😏.