As long as your friends are enganged with him and/or have the same tags as you they can tase him and you can restrain him and take their gear. To restrain a tased cop you must have 3 people with weapons around him. If you don’t have a taser you can get 3 people with guns and go up to a single cop and yell 3-1 to him. As long as you are all visible to him with weapons he must comply and put his hands up unless he has a tactical advantage such as cover or an elevated position etc.