You go out of your way to misunderstand me yet again, I don't know why you always have to make it personal, others say the exact same thing as me and you don't make a fuss. Please notice grab is in inverted commas, think about what that means. Police officers don't go 'grabbing' people in the way you mean. You may be using 'grab' as a slang term for nabbing, pinching or any other term for arresting someone but the actual physical act of grabbing is not one police officers prefer to do, do you understand that? There's a number of reasons of that, you've had it explained to you by different people, what don't you understand? ah of course that it's not BJJ!