Police to use terror laws on Heathrow climate protesters

It’s a disgrace that the government is encouraging to Met Police to use stop and search powers on lawful environmental protesters. I think the only reason these should be used if the protestors are going to threaten the life of another human. As these protestors have said they do not intend to endanger life then how can the police legally justify using the Terrorism Act 2000 to stop and search environmental protestors? At a protest at RAF Fairford in 2003 the House of Lords eventually ruled that the police had acted unlawfully in stopping and searching two coach loads of protestors on their way to an authorized demonstration. If it was unlawful then it is surely unlawful now. This country is becoming more and more like the country Orwell described in his book 1984, in fact the only thing he got wrong was the year.