Their "understanding" of Christianity allows them to turn their backs on their duty (as assigned by Jesus) and even encourages them to ignore the passive damage done by their hate, as long as it is more actively done by others. (But this not what you describe, which can scarcely be explained, and not remotely excused.)

You may see parallels with this discussion, as you drill down and discover "Jim's" truer motives:

https://medium.com/@jmrotholz/thanks-for-getting-to-core-of-my-problem-with-the-donald-db1337f6151a