As for the concept of collective guilt, I personally think that it is totally unjustified to hold one person responsible for the behavior of another person or a collective of persons.
Viktor E. FranklMost men in a concentration camp believed that the real opportunities of life had passed. Yet, in reality, there was an opportunity and a challenge. One could make a victory of those experiences, turning life into an inner triumph, or one could ignore the challenge and simply vegetate, as did a majority of the prisoners.
Viktor E. Frankl