Can some refute this data, on shootings, I am having trouble.

I was having a discussion with someone about mass shootings. They sent me the below chart with mass shootings by year, it excludes gang violence and armed robberies. It sure seems like a lot less than what I hearing in the news and here and I cant seem to find a breakdown of mass shootings to show this is incorrrect.

its from here. https://www.bbc.com/news/world-us-canada-56509481

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