Short answer: Yes

World peace is attainable, but it isn't that simple. For starters, we'll have to remove hateful or ideas that make people think of themselves as superior, and then we'll have to make sure criminals are brought to justice, and then we'll have to get rid of corrupt people and politicians, and many more things. This will lead to peace, but this most likely will not last. How do you think the first corrupt person came? Another will emerge. And if we stop him, another comes along. Peace can't be achieved from the actions of others around you because there will always be someone who brings about chaos. And sometimes it's people you don't expect. Peace can be achieved from the inside. From you. If you do your part as a human, you will feel at peace. You will feel like you helped someone, like you did something good. That's when you'll feel a peace, and that is when you can truly attain peace.