I can't reply to you anymore unfortunately but: Where's the right place? when is the right time? I'm not trying to make this about me, I'm trying to understand

I can't reply to you anymore unfortunately but: Where's the right place? when is the right time? I'm not trying to make this about me, I'm trying to understand a completely foreign concept to me. Unprovoked mass shootings seem to be a very regular occurrence for years now, and yet until the recent one in Parkland there doesn't seem to be an appetite for change.