I do not personally believe that motorists/police/non-cycling-public harbor any antagonistic feelings toward cyclists. When I ride, especially on public roads, I find that some motorists just don't know how to react when they encounter a cyclist. This can be irksome, but I don't think they mean to piss us off. This being said, I live in a small, affluent community so my experience likely differs from those of you who live in urban areas. Regarding police, most of my encounters came when I was riding BMX, grinding on loading docks and such. The cops claimed this was a destruction of property. It pissed me off, but they have a point. Take a walk in the other's shoes to gain a better understanding.