Belagavi: Karnataka Chief Minister Siddaramaiah on Monday lost his cool and made a gesture by raising his hand at a police officer on the stage, as a group of people, allegedly BJP workers, tried to disrupt his speech during a protest rally here. The group of people who were amidst the large crowd showed a black flag and shouted some slogans, Congress and official sources said. Siddaramaiah, who was visibly upset, summoned the police officer on to the stage. He addressed him in singular, "Come here, who is the SP? What are you doing?"