I think protestors generally have been increasingly effective and troublesome to the authorities and no government is going to sit back and allow the sort of disruption and chaos being caused irrespective of whether it falls between the gaps of legitimate right to protest, criminal damage or terrorism.
People are passionate about their causes and are quick to downplay any negative impact on others as ‘a bit of inconvenience’, but tbh blocking roads, airports, any type of infrastructure, or anything that stops anyone going about their lawful business spills beyond legitimate protest and needs robust legislation which is ultimately effective.
Protestors seem to want to have their cake and eat it but to some extent we’re all becoming victims of their success.