"Making skateboarding more safe" is a little problematic for me.
On one hand, I understand and agree that skate scenes would benefit by being more welcoming to "others," and to this point I think our little adolescent enclave has made some huge strides, if only just recently. Girl skaters are proliferating rapidly--really rapidly, if Instagram is any indicator--and seem to be vibing well and getting respect and admiration among kids and in vital pockets of the industry. A lot of the grassroots type groups Dabbadie mentions are doing a great job fostering an environment for young girls and queer people. They are Doing It Themselves. Millennial skaters are pretty good about this shit. It's not the 90s, we aren't EMB locs or Phelpsian hellriders, and people at the skateparks (most female skateboarding seems to be going on at skateparks, the reasons for which could be easily deduced) tolerate harassment or discrimination less and less.
On the other hand, skateboarding is inherently unsafe (and not just in the obvious sense of throwing our bodies onto, off, and over shit). Chaos and improvisation are integral to the good session. Mischief and Bakeresque hijinx abound. Street skating is dangerous. With or without skateboarders, the streets are hectic. This is part of the game and there is a point, I think, where PC scolding and skate scene babyproofing begin to take the piss out of this shitheeled thing that we enjoy doing for whatever reason.
*Edit - It's not a sesh if I don't get to take my cis dude shirt off. ^