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: One of the best-known figures in the anti-Putin protest movement, Sergei Udaltsov, has been placed under a travel ban by investigators in Moscow.

Travel ban for Russian anti-Putin activist Udaltsov