 By William James LONDON Reuters - Prime Minister Rishi Sunaks government will on Monday announce new proposals to clamp down on protests, broadening the range of situations in which police are able to act to prevent serious disruption. In recent years, protests, usually on environmental issues, have shut down large parts of central London and blocked traffic on key highways, leading to calls for the police to have more power to stop the disturbance. The government passed legislation to addres... 