(FILES) This file photo taken on February 19, 2016 shows former Polish president and Nobel Peace laureate Lech Walesa attending a meeting with students and relatives of victims of the 2014 anti-government protests, in Caracas. Polish prosecutors will on Tuesday, January 31, 2017, present what they believe is proof that Solidarity freedom hero Lech Walesa collaborated with the communist-era secret police, the state news agency PAP reported. / AFP PHOTO / Federico PARRA