What event occurs that night which provides Montag with an impression of the state of society? What is that impression?

Montag takes enormous pleasure in the first book burning
we read about.  Everything goes well and he is on a sort of high as he returns home for
the evening.  Along the way he meets Clarisse which gets him to thinking, something that
apparently few people do in the society he lives in.

So
when he returns home to find that his wife has attempted suicide by downing an entire
bottle of pills, he is somewhat disturbed.  Even more disturbing to him are the men that
come to help fix the problem who don't even appear concerned.  They do it so often that
coming to pump the stomach and clear the blood of someone is just another task, like
fixing a toilet.  This makes Montag really question the state of the society he lives
in.