Being courteous and respectful is a big deal to the DUmmies. It's something that takes effort and requires them to go out of their way because their default behavior ranges between indifference and obnoxiousness. So when they do deign to comport themselves in a socially acceptable way, it's something to brag about.
To moonbats, attention to courtesy, manners and decorum are associated with "old-fashioned, authoritarian, paternalistic" behavior standards and as such are something to be ridiculed for the most part. That is, unless the person is on their approved list of worthy recipients.
Old white people, cops, Christians, managerial types, people who make more money than they do, Republicans of all stripes, Wal Mart shoppers, etc., do not qualify.