As all brains are smart enough to not get themselves into trouble, hence even evil people use “good causes” to promulgate evil (antisemites never said “we hate Jews!” rather “Jews are evil,” so “we want to rid the world of evil”) the simple simple true mechanism to understand who truly is compassionate or vengeful, loving or cruel, is simple: “Ask not if what they are saying is true, ask only, if it is positive or negative?!” “Does it contain the emotion of compassion, or hate?!”