Humans are group animals. Try and stalk an individual wolf in a pack as an individual (even with a rifle) and let me know how it goes. You'd be lucky to live and tell the tale. Humans are the same. Getting the better of an individual human ... so easy it's hardly worth mentioning. Same with the wolf. Doing the same in a group of 100 humans, even a single individual in that group ? You won't survive the attempt.

In all animals strategies work together to establish a desired outcome. Human strength does not come from intelligence, intelligence is simply what allows us to coordinate in large groups. The actual strength comes from the large groups.