Film in black and white , seen repeatedly on TV in the 70s but presumably shot in the 60s or in the 50s :
A little girl is murdered by a pedophile who is immediately identified and arrested . During the process this guy shows contemptuous laugh in the face to the mother of the victim , which, psychologically exhausted , shoots him in the courtroom killing him . At this point she is arrested and tried for murder.Her lawyer advises to say that it was just a fit to plead and then regretted it ,but when in the courtroom the judge asks if she still would commit this act , he stands up shouting a sentence like : " I'd do it again , once, twice, a hundred times ."
I think the film ends here,I don't know if it is an American film , French or German... I'm only sure that is not Italian !
(are not these movies:“Der Fall Bachmeier,Keine Zeit für Tränen”,1984-“Annas Mutter",1984-A Mother’s Revenge,Desperate Justice,1993-"Eye for an Eye",1996.