Recent Crowd Crushes Have Proven Extremely Deadly. Here’s How Experts Say You Can Protect Yourself If Things Start Going South.

Instances of large groups of people being trampled are extremely rare, but experts say more recent tragedies have been devastating in scale, and that people need to take basic precautions to ensure their safety in the future.

The two most recent large-scale examples have been extreme. At least 151 people were killed and dozens of others were injured after a large crowd began pushing forward in a narrow alley during Halloween festivities in downtown Seoul.

Just weeks earlier, more than 125 people died in a stampede at an Indonesian soccer...