Yes, you read it right. Air guns for self defense.
Air guns are not the best choice for self defense but in locations where firearms are banned or prohibited, it is the best choice along with a combat knife and pepper spray. There are stores and restaurants where firearms are prohibited BUT air guns may not be. In Canada it is very hard to buy a firearm and so a pellet gun makes perfect sense.
Air guns and pellet guns are much more powerful today then 20 years ago. You can kill a human with today’s air guns. Some of the rifles have velocities of 1250 fps which is the same as a .22 LR. BB’s are much better for self defense because they are steel and penetrate further than soft lead pellets which flatten and stop quickly.
Here is a video discussing air guns for self defense and which ones are a best choice.