It's important, we teachers step up.
Here let's share and post lesson ideas related to peace. Find Andrew Finch's fine article about Peace In Education attached - more food for thought.
Some resources you can immediately look for on the community:
Project Peace videos and peace packs - join the group.
This video is a nice brainstorming activity. Have students brainstorm 10 countries they think aren't at war. See how many they match - 1 point for each. Who wins? Then have a discussion - what makes a country "at peace".