Think you saw that on Tomorrows world sadly health and safety put a stop to that idea me thinks and it was tear gas rather then KO gas (what would amnesty international say)
Really?
OK then. So, on either side of police cars we mount harpoons with built-in tear gas.
Same with police helecopters - load them with missiles filled with tear gas.
And when these morons are caught, it is about time all their posessions were taken into account to pay off the costs incurred catching them. If these people have family, they can be moved into a small caravan at the nearest pikey park.