With all of the violence that we're seeing across the globe, I don't think that there's any one location that's much safer than the next. From terrorist attacks all across Europe, to extremist linked hostage takings in Asia, to the apparent increase in racism related encounters throughout the UK following the Brexit vote, to the nightclub shooting in Orlando... We can go on and on, leaving no individual country untouched in terms of potential dangers, I'm sure.
I totally appreciate where you're coming from. I was very hesitant to go to Jamaica last year, especially because I was sharing a hotel room with my boyfriend. I was pretty worried that being obviously gay there would cause some issues for us, and while I'm sure that it could have under the right circumstances, it didn't, and it turned out to be one of the best vacations and experiences that I've had in my life.
I suppose that from that and other experiences, my line of thought has become that if I start letting fear dictate what things in life I choose to experience, that it's going to be a pretty unfulfilled life. If not this year, maybe think about coming in the years that follow!
Besides, I think that the worst danger that likely exists at a Star Trek con is finishing the last bottle of Merlot at the bar when ten nearby Klingon cosplayers are under the impression that it's actually bloodwine.