We all maintain our own ethical standard, no? What we believe in, how we raised up, our culture, socio-economical perspective everything shapes our ethics. We ourselves also maintain our own level of standard which is totally natural. But the thing is, we believe that what our standard is the best, what we believe in the best way and we act judgemental on other's ethical standards.
The world is so diversified. It's not even possible to know different tribes, races, ethnicity ie. Thinking what we are doing and believing in is the best is like acting like a blind. One of the reasons we are becoming so intolerance day by day is this believe. We forget that people have so different way of seeing life. And life has so different angle, we can only see a few. So what others are seeing and believing in is not false. We are just don't have that angle.
You can match this behavior with anything, like any political issues, any religious belief or even in some personal issues. It's very common to see our own family members also behave like they have a better standard of ethics and what they are believing is always right. I'm not saying people can't have a better standard.
A person with a divine heart must have a good ethical standard than a criminal. But what I'm saying is; we should open our minds towards accepting that they also have their own causes and reason to believe differently. And some other people can also have better ethics than us. The moment we realize this and practice this, we will see a change in our life also.
Our respect for each other comes from this tolerance and compassion. People can follow strict ethics, 'common good' ethics and many more. So we need to be more open to accept everything and increase our level of tolerating things. I hope this behavioral change can bring respect, harmony, and peace to humankind!