Military Style Aprehension at G20

A protestor at the G20 Summit was apprehended by several men in military style BDU’s the video, found on you, was linked to by the DrudgeReport saying something to the effect of a military arrest. After looking at the video I notice that while these men are wearing BDU’s, they are of varying camo patterns. One does seem to be a standard military pattern, but at least one other man has a more Vietnam era camo pattern. I also notice that their boots differ. While the driver seems to have desert combat boots the others have straight black boots. None off the men are wearing any kind of cover of helmet. It also does not seems easy to identify any patches on the uniforms.