Two teenagers tried to push a disabled man out of his motorised wheelchair in an "distasteful and unprovoked" attack, police said.
The 57-year-old was walking his dog in Stratton Park in Basingstoke when the two youths approached him from behind.
They took hold of the chair's handles and tried to push it over but the man fended them off and remained upright.
The two, who were wearing dark clothing, then ran off in the direction of Down Grange.
Pc Vincent Lane said: "This was a particularly distasteful and unprovoked attack on a disabled man who was simply taking his dog for a walk in the park.
"It would appear as though it was their intention to push the victim out of his wheelchair and into a puddle on the ground.
"Fortunately, this sort of incident is not common, and I would like to appeal to anyone with any information to get in touch."