Here is a video of a lovely young gentleman (can't swear on this forum) stealing a £1000 Brompton bike in broad daylight in UK. Passersby try and stop him but he's got an angle grinder....he gets away...with the bike.... Just wondering if advanced grapplers would chance tackling someone with such a weapon? What if it was your one thousand pound bike? There are plenty of opportunities to grab him when he's on the bike. Me personally, if it was my bike, I would probably have gone for the knockout punch (I'm not a good grappler) when he gets off and is no longer in possession of the weapon briefly. But you don't know if the other gang members have knifes or even guns these days...the problem is it's a very dangerous weapon!