When we each practice peace, we become part of a world movement towards Peace on Earth, which we all hope for ourselves and our children. First we need to remove prejudices from our minds and hearts. Almost all of us are prejudiced against some group of people.
If we are poor and unemployed, it is easy to hate someone rich with an easy, leisurely life. If we see an obviously rich person, we may feel hate or anger towards them. But we do not see the real person- they may be facing something terrible in their life that we could never deal with. They may be selfless in their efforts to help the homeless, defend the oppressed...
If our people are at war, it is easy to hate “those people.” But each of those people may also have children that they are afraid for. We all want peace- especially in the middle of war. Our commonalities are always greater than our differences. We all come from the same two parents- Adam and Eve (Or to put it in a non-religious way- we all have a common genetic background), and we each have the same needs. Wars start with hatred and misunderstanding. We choose to hate or to understand.
We can choose to stop hating. So next time you see someone (or reply to someone) who you feel anger toward, someone who is showing that they are opposite to you and your values, remember the humanity in that person, before you respond. If you can, smile. That would be a beautiful beginning of a movement toward peace on earth.