Mob mentality is what he is referring to.
A single person can think something over and come up with a the best idea they can come up with to a problem.
But a mob will think and act as one mind and that mind is usally made up of primal insticts of anger or made up by what the person with the most influence says. Which most likely is still running on insticts not logic.
To a point, when everyone looks the same it increases the likelihood of violence as they feel less accountable but depending on the group size (usually past 20) whether they wear something to conceal or not doesn't matter
A single person can think something over and come up with a the best idea they can come up with to a problem.
But a mob will think and act as one mind and that mind is usally made up of primal insticts of anger or made up by what the person with the most influence says. Which most likely is still running on insticts not logic.
*every political mob ever*