I think these mass shootings are a breath of fresh air.
Oh wow, that sounds a little cruel. Why would you feel that way?
Because they make the media aware of the values of people who support violence
Whatever motives, or whatever political ideals some people have, committing violence against others is never acceptable, and it does nothing to help their cause.  You wouldn't want someone to come and kill people you know, for any reason, so don't wish death upon others.
I don't care about other people.
While you are entitled to how you feel about others, it is still very wrong to cheer on people dying like this. There are other ways to let people be aware of violence through information and history, not having people killed.