What is the fine-grained topic of the following text: The right to protest freely has been affected by the Terrorism Act of 2000, which allows police to stop and search people in a designated area - which can be anywhere - and by antisocial behaviour laws, which allow police to issue an order banning someone from a particular activity, waving a banner, for instance. Only return the topic.
Impact of Terrorism Act of 2000 and antisocial behaviour laws on the right to protest