This is the 3750th most frequent Russian word.
ходят
They walk; they go.
Here, 'ходят' is used to describe a habitual or continuous action of walking performed by an unspecified group of individuals in the park.
В парке ходят люди.
In the park, people are walking.
In this context, 'ходят' figuratively refers to the movement or circulation of rumors within the city.
По городу ходят слухи.
Rumors are spreading around the city.
'Ходят' is used to indicate the regular action of going to school performed by students.