Definition: In this task, you need to generate an appropriate title for the given summary of some paragraph. The generated title must be short and should include the main topic of the given text. Your summary should be less than 20 words long.
Input: More than 20 people have been killed in clashes between protesters and security forces in the Democratic Republic of Congo's capital, Kinshasa, over President Joseph Kabila's failure to give up power, a UN official has said.

DR Congo anti-Kabila protests 'leave more than 20 dead'