On This Day, April 15
- 2021: A mass shooting occurred at a Fedex Ground facility in Indianapolis, Indiana, killing nine and injuring seven.
- 2019: The cathedral of Notre-Dame de Paris in France is seriously damaged by a large fire.
- 2014: In the worst massacre of the South Sudanese Civil War, more than 400 civilians are gunned down after seeking refuge in houses of worship as well as hospitals.
- 2013: Two bombs explode near the finish line at the Boston Marathon in Boston, Massachusetts, killing three people and injuring over 500 others.
- 2013: A wave of bombings across Iraq kills at least 75 people.