In 1969, Widacki graduated from law at the
Jagiellonian University. He studied also philosophy. He is an author of over 10 books and numerous articles. He was a faculty member of the
John Paul II Catholic University of Lublin (from 1977) and the
University of Silesia (1983–1990). He was a vice minister of interior in the
Cabinet of Tadeusz Mazowiecki (1990–1992), Polish ambassador to Lithuania (1992–1996), and Member to the
Sejm (2007–2011). He has been member of several political parties and associations:
Polish United Workers' Party,
Solidarity,
Democratic Left Alliance,
Alliance of Democrats,
Democratic Party – demokraci.pl. He co-authored, among others, the book
Kryminologia: zarys systemu (
Criminology: Outline of the System, 2022; together with
Magdalena Grzyb, and Anna Szuba-Boroń). == Honours ==