Do you not remember the protests for civil rights? The sit ins? The marches? The protests outside the white house?
Literally every part of what is protesting is based on disrupting everything for the average citizen so the govt is forced to make a change.
The point of protesting is to force action without violence. People blocking traffic or stopping people from entering certain businesses is exactly what protesting is.
Protesting isn’t just rallies where people come together to talk about what they all agree on. It’s actively forcing people to acknowledge the issue without resorting to violence.
Edit: I didn’t see this was a UK post which is my bad but it’s still relevant