The Turks killed 12 trying to cross their border yesterday. Nothing to see here folks, keep moving. It is only a human rights issue when Israel does it.
Of course, the Turks have every right to kill people trying to cross their border. That is what it means to be a state, to have the right to decide when to use violence to defend your sovereignty. Your borders are your sovereignty. If you don't decide who comes in here you are no longer a state.
And of course that is precisely the point. Israel's defense of its borders is treated as a human rights issue by much of the human rights community precisely in order to undermine its continued existence as a state.