peer harm behaviour Training intervention poor culture intervene active speak officers confidence team prevent sets stop things bystandership benefits service sense policing agree challenge standards support public key leaders learn moral motivate reduced positive practice Peers teams tone values behaviours confident colleagues harms Great fear hear colleague staff report responses Question Professional negative leadership Level line wrong young learning knowing longer loyalty mental motivated making open organisation recently position past police preventing power responsibility Science stronger starts Uphold wanting warning tolerated toxic communication compass channels create daily called action asked address addressing health hold issue joined impact important expected forward Drive environment Essential evidence evening dont drink escalation empower empowered empowering forget friends feel fit focus force improve including inhibitors Integrity joining issues job join intervening infrastructure holding high Helps horror hurt imagine harmful groups bad base actions calling challenged call Build building benefit boundaries damage Constructive discussions difference differences