The phrase "murderous regime" refers to a government or ruling authority that engages in acts of killing or violence, often targeting its own citizens. Full definition
The truth is that the most murderous regimes in human history, starting in 1790, have been secular ones. (religion.blogs.cnn.com)
Throwing around phrases like «socialists» and «Soviet - style takeover» and «fascist» and «right - wing nut» --(laughter)-- that may grab headlines, but it also has the effect of comparing our government, our political opponents, to authoritarian, even murderous regimes.» (nystateofpolitics.com)
«This designation will impose further sanctions and penalties on North Korea and related persons, and supports our maximum pressure campaign to isolate the murderous regime,» said Treasury Secretary Steven T. Mnuchin. (fortune.com)