bandwagon

Being part of or supporting a popular movement or activity.

To quickly join a popular trend, often for personal gain.

To become part of a growing movement or trend.

To join a popular activity or trend.

The tendency for people to adopt certain behaviors or beliefs because many others are doing so.

A trend or movement is becoming stronger and more popular.

A trend or movement is developing more quickly.

A trend or movement is starting to become popular.

A trend or movement powerfully carries people with it.