If you do not have occasion to work, patronize or visit any of these establishments, you are a rare person indeed, but if you or any of your loved ones do frequent such places, there is cause for concern. There are graphic media accounts describing each. There are significant fines for failure to do so. Survivors and even witnesses bear psychological scars for life. But unlike sexual harassment, workplace violence has resulted in people dying and that is precisely what we must stop.
Awareness is the key and awareness only comes with training.
Get training where and when you can, but be cautious. Avoid trainers who purposely exaggerate the incidence and frequency of workplace violence for their own ends. Avoid trainers whose courses are so cumbersome that they become impractical for employers to provide to their entire workforce. Avoid trainers who fail to convey to their students that workplace violence can have horrifying and deadly consequences. And most of all, avoid trainers who generate even more disgruntled employees by placing all of the responsibility for violence prevention on the boss.