Final answer:
The mass shooting at El Paso's Walmart happened approximately 3 years ago, contributing to ongoing debates about gun control and the rise of gun violence in public spaces.
Step-by-step explanation:
The mass shooting at a Walmart in El Paso occurred on August 3, 2019. Therefore, as of the current year, it took place approximately 3 years ago. This tragic event is among many that have sparked a national debate on gun control and the accessibility of firearms. School shootings, such as Columbine in 1999, Sandy Hook in 2012, and the more recent shooting at Covenant School in Nashville in 2023, have been prominent incidents that add to the concern over gun violence and the safety of public spaces in the United States.