1
general::
Phrase(s): follow the crowd
to do what everyone else is doing. • I am an independent thinker. I could never just follow the crowd. • When in doubt, I follow the crowd. At least I don’t stand out like a fool.
McGrawhill's American Idioms And Phrasal Verbs
2
general::
Go along with the majority, do what most others are doing. For example, Make your own decision? don't just follow the crowd.
American Heritage Idioms