just force, that does not mean pouring gasoline on someone...

I don't think so. For a 65 year-old man to REASONABLY detain a felony suspect AND insure his own safety, a REASONABLE person would expect him to resort to something other than shere brute strength,which he may not have. He therefore resorted to other "assets" availible to him & merely threatened the individual. Another way of looking at it is, he was only utilizing his Right of free speech after the "poor, misunderstood" felon "somehow" got gasoline on him. .
GROW UP! Someone stood up to a criminal, the bad guy "lost" & you don't like it!
those that sympathize with the criminal, what would you have Roy do? Let him go? The cops response wouldn't allow for that, so ahe did the best he could with the assets availible....