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: Representatives of two indigenous groups in Namibia, the Herero and Nama peoples, have filed a class-action lawsuit against Germany in New York.

Herero and Nama groups sue Germany over Namibia genocide