As noted above, police work presents a high risk of developing attitudinal problems. As a police officer's career progresses, they become more cynical. No one questions this anymore. The only questions in the research are how cynical and how soon. Some studies suggest that cynicism can be seen developing in the academy and just gets worse from there.
Life is like an airplane.
An airplane has four forces working on it. Gravity pulls it down. But the wings can produce lift, which picks it up. The engines produce thrust. But the air around the plane produces drag or resistance.