Rashi teaches us (Bamidbar 10, 35) what Jew haters have churning in their souls. Those who hate Jews really engender a hate towards G-d.
Who, for example, rate among virulent Jew haters?
"Religious" Muslims.
Can Rashi be right? Could it be these Muslims, who commonly shout out "G-d is the strongest" before they do their killings or cause pain, actually hate the very G-d they invoke?
More likely they're rebelling against the G-d they deeply despise. Notice how they never speak lovingly about G-d. And when they die for their perverted cause, they have lust on their mind. Do they do their wickedness to be closer to G-d? These creatures are driven by emotion, not brains.
If not for Rashi, we might not have attributed hatred of G-d to "religious" perpetrators of evil. After all, they claim to be doing G-d's will. Rashi shows us - they live the lie.
There are 3 sorts of Jew hater.
1) Those who publicly gather for their anti-Jewish cause;
2) Those who follow the former in their fight but will turn heal and flee as soon as they feel threatened; And
3) Those who non-demonstratively or secretly bear their hatred.
See also previous posts: "The Psychology of Islam", and
P.S. In a previous post I wondered how a person such as George Soros, a Jewish holocaust survivor, could support, nay promote, anti-Jewish causes. There too I relied on Rashi for an explanation. But this Rashi may provide the better clue. It may well be what Mr. Soros experienced during the holocaust brought him to hate G-d, and as a result, as Rashi here asserts, it automatically transfers to a hate of the Jewish people.
P.P.S. Here is a great short video of anger among Jew haters the world over and the Jewish existential phenomenon.