Which event involved the shooter Seung-Hui Cho?

The event that involved Seung-Hui Cho is the Virginia Tech shooting. On April 16, 2007, Cho, a student at Virginia Tech, embarked on a tragic rampage on the campus, resulting in the deaths of 32 individuals and injuring many others. This incident is one of the deadliest school shootings in U.S. history and had a profound impact on discussions regarding gun control, mental health, and campus safety.

The other events listed, although tragic in their own right, do not relate to Seung-Hui Cho. The Sandy Hook Elementary School shooting occurred in December 2012, the Westroads Mall shooting took place in December 2007, and the Aurora movie theater shooting happened in July 2012. Each of these events involved different shooters and distinct circumstances separate from those surrounding the Virginia Tech incident.