Mothers Day shooting

My opinion on the shooting is just wow. What is the point of people doing this. And also in my mind is why is there a freaking mothers day parade. As humans we find more and more things to do for nothing. There was no need for a parade for this day. You need to be with your mother. Mot taking her to some parade and for what. What the heck is un this dang Parade. I just don't understand.