If you call the cops on someone whose behavior is worrying you, just know that your call may lead to the cops killing or seriously injuring that person.

Sitharath Sam learned this lesson Sunday after she called the police on her boyfriend of ten years. Sam is reported at KNXV-TV to have called the cops when her boyfriend Sean Mould, who had been heavily drinking, refused to leave her home. Sam also says Mould neither physically abused her nor threatened her. Tempe, Arizona police arrived at her home and shot Mould, who they say walked toward a cop while holding a pocket knife. Summing up the lesson from the tragic turn of events, Sam states, “I made that one mistake of calling for help; and now he’s dead, and I have to live with it.”

Watch here a KNXV-TV report regarding the killing of Mould.

Mould is among the about three people a day police killed in America in 2015.

Police, in addition, seriously hurt — both physically and psychologically — many more individuals each day.

For example, a December 26 in-depth Sarasota Herald-Tribune article presents the horrific details and gory pictures of what happened in July of 2012 after a Florida mother called the police and informed them that she was concerned that her 18-year-old son Jared Lemay may commit suicide. North Port, Florida cop Michael Dietz, upon finding the son Jared Lemay hiding in a trash can, sicced a police dog on Lemay. Evidence indicates the attack arose from a police department where the exercise of excessive and unwarranted force by police dogs is encouraged. Indeed, fellow police dog handler and current police dog unit leader Keith Bush even texted “COME GET UR BITE” and “I’M GONNA TAKE UR BITE IF U DONT HURRY UP” before Dietz’s dog attacked Lemay. Read the Herald-Tribune special report here.

Instead of reflexively calling 911 in response to a problem, it makes sense to consider seriously the potential benefits and costs of doing so — as well as other options. Calling 911 could be the decision you most regret in your life.