None have been killed with a Molotov cocktail so far.
None have been killed because they have firefighters and fire extinguishers with them, doesn't change the fact that throwing Molotov cocktail into someone's face can, and probably will, kill them.
After two month of Yanukovych plainly ignoring protests and our opposition ("leaders" of the protest) being impotent, protesters were desperate, so the more radical part started to use the violence against police at Hrushevskogo street. Maidan is still a place for peaceful protest.
I don't want to excuse our radical protesters, but the situation was grieve and radical protests succeeded at Yanukovych admitting that he has to do something.
They have been primarily used for disabling vehicles and making some ground impassable. It doesn't appear that the wiki even references their use against individuals so much as against vehicles.
No need for wiki citations when you can see it clearly being used against police forces here:
I'd never heard of it being used in an anti-personnel situation (you primarily hear about/see it in its intended capacity). But I guess it would be ridiculous to claim it never has been used against an individual.
Much like in this short video (you will have to excuse the gallows-humor soundtrack, it's not my intention to make light of the scenario): http://coub.com/view/hgsj
Oh, HN! You marvel of marvels. Don't you ever change.
You really do sum up HN right there! Congrats! ;)