There is no such thing as 100% , bad people will be bad people , but body cams , constitutional rights education , better and periodic psychological screening , and perhaps more rotation from street to desk , will help greatly . However the bottom line is , we the people need to stand up to the bullies when needed , and not alone ……..but in mass . That really does work . I keep bringing up the Bundy Ranch , but that showed all americans that we still do indeed have the power , the feds had a choice : spark a civil war , or stand down and find other , less Stalinist ways do get their money from that family . Things like that , where americans make a stand with arms , may be exactly what is needed in some cases . You look at how our constitution is written , and you will find many checks and balances all through it , the 2nd amendment was put in there , deliberately as a check measure . They were correct to do that . It always amazes me about how astute these men were , for the time period they lived in .