Casual cruelty
Dawdlers (down the middle of supermarket aisles, one-way streets, etc)
Hand-wringers who’d prefer to do the ‘woe is me’ dance for years, rather than take some simple steps to resolve a situation (and put us all out of their misery).
Sticky/grimy handles on sinks or cabinets.
Chronic lack of punctuality, when other people have expended extra effort for the group.
Quite a few things, clearly 