In the beggining in the East also weren't any Kalashnikovs, RPGs or at least molotovs, but it was on maidan, wasn't it?
No, there were no Kalashnikovs and RPGs at all and there were no molotovs for first 1.5 months.
There is only one logic, if it is possible in Kiev, then why it is forbidden in the East.
Well, no. Violent protests, rebellions are always forbidden as they should be. And the fact that maidan had better reasons doesn't excuse violence that was there. And of course it doesn't excuse any further violence.
Still I don't understand these protests. Government basically accepted all demands except federalisation, which is not acceptable. What do they want? I don't really hear any arguments from that side apart from "evil ukrainian fascists".
And I grieve that civilians are killed by ukranian army on the East.
So, I take it, you don't grieve that ukrainian soldiers are killed by "civilians" there?