Cops have always had a trigger-happy culture. They seem to forget that they are NOT our masters, to yell or be rude to. They cover for one another, often hide exculpatory evidence, lie in official police reports and court testimonies while under oath. Even my friends and relatives, former cops (most retired now) don't like cops, particularly the younger ones that think the public needs to be herded like cattle and chattel; it is for that reason even law-abiding, peace-loving, working-class citizens don't feel comfortable around a single cop and moreso with several cops staring at them to intimidate them, harassing average people, trying to exert authority they don't have to harass people violating people's civil, constitutional and legal rights, freedoms and liberty and doing nothing wrong while on a public venue.
Cops love using the tired out cliche, "We put our lives on the 'line'' everyday..." yeah, they walk in pairs or groups to walk the same streets unarmed children, women, elderly and disabled people walk every single day... maybe they should quit and go back to their suburbs and feel safe if they're always "in fear of [their] lives..."