"Militsiya z narodom!" - "The police are with the people!" - is one of those ubiquitous slogans now.
Today, I heard two more, both directed at the police/riot police and chanted to the same beat as "My razom, nas bahato, i nas ne podolaty!" - "We're together, there're many of us, and we cannot be defeated!" (or, "The People, United, Will never be defeated!" - Ms. Dunning, thank you so much for letting me know about the English version!):
"My razom, nas bahato, a z vamy bude bilshe!" - "We're together, there're many of us - and with you, there'll be even more!"
"Idit' pohriytes, a my za vas postoyim!" - "Go and get warm, and we'll stand here for you!"
This last one is so charming! The cops were smiling when the crowd was shouting this... Most of them are as young as the protesters, you know, and they are Ukrainians, too...