A few NO and BEWARE signs

A wise learner of language will start not  with not with lame dobroye utropozhaluysta, kan proyti na Krasnuyu Ploschad kupit matreshkas and such but with words and phrases that are at the core of the culture. Warnings and prohibitions is what defines Russian mental set, and words and phrases to that effect permeate the language. Here are several random NO and BEWARE signs.