Provocateurs are undercover agents who initiate violence to blame it on a particular group. In this case the provocateurs appear to be working directly for the Ukrainian police, but are dressed to appear like “pro-Russian” protesters.
These provocateurs shot bullets at a pro-Kiev football crowd, and this led to the complete anarchy and mass murder at the union hall.
Ukraine: Massacre in Odessa – So-Called Pro-Russian Masked Gunmen Coordinated by Local Police
“One of the identified coordinators was deputy chief of the Odessa Interior ministry branch Colonel Dmitry Fucheji.”
Also see: Odessa Provocateurs: Censored News
Russian news coverage:
Political Film Blog 
New Gleiwitz in Ukraine planned? Please re-distribute – Ukrainan SUB Secret service brought 200 Russian uniforms and 70 Russian Army identity cards from Kiew to Donezk. They want to provide and film a “Russian border attack” for the media.
Source: http://news.dkp.de/2014/05/ukraine-lage-am-dienstag-8-mai-2014/
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