The lottery is very much a grim outlook on society. It carries with it themes that are almost moral outlooks or lessons regarding society.
Resistance to deviate from tradition or outdated thoughts, even when those traditions no longer make sense to us. One of the villagers in the story says, “We have always had a lottery as far back as I can remember. I see no reason to end it.”. The refusal to step back and examine the ritual dooms the villagers to continuing the gruesome tradition.
Mob mentality, following the crowd, sometimes leads to terrifying consequences. Once again, without examining the values and roots of the tradition, the villagers give themselves to a mob mentality. They remove any individual thought and go with the crowd.