hitting mom with autistic sons

From today's World Wide Words, ed. M. Quinion.

Spot the unwanted implicature:

Two widely reproduced online reports of 22 July about an incident
in a suburb of Atlanta, Georgia, had equally strangely constructed
headlines: "McDonald's boss punches mom with service dog" (spotted
by Ernie Scheuer and Gordon Schochet); and "McDonald's manager
accused of hitting mom with autistic sons" (found by Robert Wake).