the more accumulated emotional pain someone has the more likely they are to act violently towards another. violence comes in many forms. a violent thought is the start of a violent action and if left unchecked can lead to consequences.
those who 'have no morals' were most likely extensively abused as children or in adolescence. kids who grow up in a stable home environment with a lot of love and care will almost certainly not become murderers. furthermore, some societies have higher murder rates than others. this also indicates that environment plays a huge part in whether or not someone is 'evil'.
evil is an extremely unethical concept that negates empathy. when we call someone else evil, we fail to remember that we don't know this person's background or life experiences. we cannot know what someone else has gone through because we are not them. it's extremely easy to sit on the outside and label someone as evil without having all the information; our egos love to do that.
as a teen i experienced severe depression and anxiety and drugs pushed me to a point where i had a violent breakdown and threatened to kill people. i didn't physically assault anyone but i did shout a lot and smashed a window. if i'd been sent to prison i would've got a criminal record and my life would've been a lot more difficult than it is now. instead, i went to a psychiatric hospital where i received treatment and care.
all criminals are mentally ill. no criminals are evil. all criminals should be regarded as equals, no matter their crimes. prisons should be abolished and replaced with psychiatric hospitals (albeit more supportive ones than there currently are now). these people should be treated with the same level as respect as you or i receive. they should have all the care they require and all the resources they require. if they want to bake a cake, give them some cake mix. a psychologist should be on hand 24/7 for unconditional care and support, speaking calmly, kindly and rationally to whoever is in hospital.
they are our equals. i am your equal. humans need to get over ourselves before it's too late and ego destroys everything.
edit: i'll also add that crime is subjective. to one individual, killing an animal to eat it might be perfectly ok and to another it might be absolutely disgusting. it doesn't matter what the individual thinks: we have to look at the facts. for example:
does an animal want to die? no
is there a way around eating meat for most people? yes
what is that process? gradually transitioning to a vegetarian or vegan diet with absolute concern and consideration for one's nutritional requirements and therefore not pushing one's body too far
if it's not viable for someone to become vegetarian or vegan straight away/at all, what other options are there? humanely raised animals with the most painless death possible; campaigning for factory grown meat; campaigning for animal rights to mitigate negative consequences of one's impact; donating to highly cost effective animal rights charities
http://www.animalcharityevaluators.org or doing research to educate ourselves and others
From an average donation of $1,000, Animal Equality would use about $380 towards investigations of the conditions of animals on farms and in other industries, paying for a tiny fraction of an investigation but reaching hundreds of thousands of people through media coverage. They would use about $200 to support grassroots outreach, funding two information stalls which would distribute about 650 pieces of literature each. They would use about $160 on social media and online outreach, and about $160 on bigger protests. Finally, they would spend about $60 on legal advocacy, mostly related to their investigations and protests, and about $40 on corporate outreach related to their investigations. Our rough estimate is that these combined activities would spare about 10,900 animals from life in industrial agriculture.
so yeah the point is that you and i aren't perfect. no human is. we've all done stuff we regret. so let's forgive ourselves first and foremost and assist and support everyone else unconditionally to realise our full potential as a species and change this world into the best place it can be