They were horrified to hear that women and children who sought shelter in a local church were locked inside and the church burnt to the ground.
Their lives were changed forever after knowing the history of a piece of land just outside their town that they'd driven past hundreds of times in their young lives.
Rhiannon Magee, Tai Jones and Leah Bell were so moved they launched a petition for us to begin commemorating the lives of all who suffered during the NZ Wars and last year the Government agreed with the teenagers.
The teens gathered thousands of New Zealanders' signatures because they argued that all of us deserve to know the history of the place that we call home.
Young New Zealanders deserve to know their region's history. The good, and the bad: trying to hide the past and making out that it was always wonderful or always terrible is neither true nor fair.
Know your history - Kimihia ō kōrero tuku iho - is the Human Rights Commission's theme for this year's Waitangi Day and it's an important one.
We are encouraging people to find out about the place they live in and in particular to encourage their children to grow up knowing about the place they call home.
Luckily we have locals like the late Awanuiarangi whose wise words should be acted upon.
2017 is not very old but already we do not need to look far overseas to see what happens when people from different backgrounds and ethnicities do not get on with one another.
We are not perfect in New Zealand but when it comes to living alongside each other in peace we are doing better than many other places.
We live in one of the most peaceful nations on earth as well as one of the most ethnically diverse. Whether it remains that way depends on us.