Which line in this excerpt uses the logical fallacy of ad hominem?

the police, as usual, were as friendly as could be, but, because of the complaint, we had to turn down the volume.

once again, neighbors can pat themselves on the back for to ruin a perfectly good program.

more than likely, all they are concerned with is their selfish desire for pure silence and 8: 00 p. m. bedtimes.

if they choose to use chain saws on their property, they have the right, and we completely respect that right.

do we have to play the harp to win our neighbors' approval?