Just thinking about this now, and I am wondering.. Would it be a reasonable defense to for them to way that since they were in there usual and accustomed hunting area they were legal to conduct patrol. Then stretch this by saying they believed the individuals were acting in a careless and dangerous manner to public safety and as such felt they were obligated as law officers to stop the action. No right to arrest, but a duty to stop the danger to the public in general. I don't think it the truth, but in legal terms it may be an out.