. >> reporter: cell phone video taken by nick connelly at a giant eagle grocery store in pennsylvania. >> we live america. >> reporter: connelly to nbc news the confrontatn occurred as he trieto explain he has a doctor's te exempting him from wearing a mask due to panic attacks. do you feel when you go into a grocery store without a mask you're putting anyone else at risk >> that's hard to say. that's a really tough question for me to answer no me personally, if i were scared i would stay home. i'm just not scared. >> reporter: contacted by nbc news, the store responded in part, we are committed to safe guarding the health and well-being of our team members and guests while creating a safe and comfortable environment for everyone it's the latest in a froeg number of incidents across the country. in michigan, three people have been arrested for murder over a dispute about masks. >> this was extremely senseless. >> reporter: in miami beach, a publix customer went on a rant after being denied entrance for not wearing a mask in alabama, an off-duty officer was seen body slamming a woman a