I do however think that the last sentence is slightly dislexic in stating that humans who have the will and capacity to cause such harm and judgements on others will latch onto a reason to do that. I think that statement is the wrong way around, I think that these reasons, religious or otherwise, attach themselves to humans and drive the capacity to cause harm.
Thats impossible. Humans are conscious and aware beings. Ideas beliefs religions philosophies etc., cant just jump out of the bushes and attach themselves to a human mind. Humans chose all their inner world views, sometimes consciously sometimes sub consciously But indeed those ideas 'latch on ' because a human has the abilty to recognise, and, either consciously or subconsciously ,desires to make them his/her own. People are not innately good or evil, they become so via the choices the make. Sometimes those choices are circumscribed by environment, but we all have several very basic choices, including whether it is right to harm another just so that we can live, or improve our own condition.
No one is forced or compelled because of their religious beliefs to act in a certain way. It is an individual choice made withinone separate, individual mind. And when one recognises that one's actions are causing harm, then one always has a choice to alter those actions, even if it goes against your religious teachings . So a person who enjoys causing suffering will use religion or anything else to do so A person who choses not to do harm or cause suffering, will not allow a religion or anything else to cause him /her to do so. Sometimes harm can be caused by good intent but tha t is a separate issue.