Mr Flanders discusses aesthetics and the ugliness of much modern 'art' which is little more than rubbish.
From One Peter Five
By Timothy Flanders
The beautiful is the same as the good, and they differ in aspect only. For since good is what all seek, the notion of good is that which calms the desire; while the notion of the beautiful is that which calms the desire, by being seen or known. Consequently, those senses chiefly regard the beautiful, which are the most cognitive, viz. sight and hearing, as ministering to reason (I-II q27 a1 ad3).
Desecration is a kind of defense against the sacred, an attempt to destroy its claims. In the presence of sacred things our lives are judged and in order to escape that judgement we destroy the thing that seems to accuse us.