I’d say it depends a lot on where you live. Out where you live everyone in the State could meet in one place and not amount to a horde. In congested urbanized areas the horde is on the street already.
No matter where they live when food runs out in their respective residences those people are going to go out looking. As they get hungrier their desperation will grow. They will do things they would not risk before.
In addition to regular folks desperate for food will be the subculture with no respect for others or laws. This group will be taking whatever they can. If cars still work This group will be roving looters.
Where I live I expect beggars, theives and looters mixed in with families trying to escape.