On the SoundCloud of the Thomistic Institute you may find recordings from the conference On Cooperation with Evil, which took place on March 16th-17th at the Dominican House of Studies in Washington. The lecturers included, among others, Edward Feser (Pasadena City College), Ezra Sullivan O.P. (PUST Angelicum) and Andrew McLean Cummings. The lectures were given mainly from the Thomistic point of view and concerned e.g. a question of cooperation with evil as erosion of prudence (Aquinas stated that this virtue is corrupted by sexual immorality more than by anything else, as this kind of immorality erodes general moral reasoning), the issue of intentions of the person cooperating with evil and isomorphism of action and co-action with evil.