Crimes mala in se concern inherently immoral acts: Not every criminal act, however, involves moral turpitude. It is for this reason that ''as to what crime involves moral turpitude, is for the Supreme Court to determine.'' In resolving the foregoing question, the Court is guided by one of the general rules that crimes mala in se involve moral turpitude, while crimes mala prohibita do not, the rationale of which was set forth in Zari v. Flores. (Matalam vs. People, G.R. Nos. 221849-50, April 04, 2016)