Murder is always tragic, no matter who is behind it. I think this murder is extra tragic because the death of Nemtsov is being used for political causes. Disrespectful.
Well, there are many uses. Impopular speech is in theory protected by free speech laws, but in practice you are only safe doing popular speech. Anyone that says something impopular should use COMSEC. It might not be needed today, but I'd use it to be safe tomorrow.
You can even change the unconfigurable lxterminal from lubuntu to use OS X keybindings. Run apt-get source lxterminal. Then change the bindings in src/lxterminal.h (change <CTRL><SHIFT>C to <ALT>C and the same change for V, for paste). Then run apt-source --commit to commit your change locally and finally dpkg-buildpackage -us -uc to build your modified lxterminal.
Edit. And change other keybindings in .config/openbox/lubuntu-rc.xml. For instance change keybind key="C-Left" for GoToDesktop left to get the same binding as in OS X.