Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: For almost 30 years, Abdullah Ocalan called for his people to wage war against the Turkish state. On Thursday, the imprisoned founder of the banned Kurdistan Workers' Party made a historic call for dialogue with the government, as a letter from Ocalan was read in the Turkish Parliament. "We for tens of years gave up our lives for this stuggle, we paid a price. We have come to a point at which the guns must be silent and ideas must talk," said the letter, read by Sirri Sureyya Onder of the pro-Kurdish Peace and Democracy Party, known as the BDP.Letter from imprisoned leader of Kurdish militant group is read in Turkish Parliament"The guns must be silent and ideas must talk," writes Abdullah OcalanKurds have tried to separate from Turkey for almost 30 yearsThe Kurdistan Workers' Party, known as the PKK, is a Marxist separatist movement 
 Question:Human rights organizations have accused Turkish security forces of summarily executing _ and allowing others to die in custody, as well as the additional killings of thousands of Kurds.

Kurds