bandwagon

Từ điển Oxford Advanced Learner 8th

band·wagon [bandwagon bandwagons] BrE [ˈbændwæɡən] NAmE [ˈbændwæɡən] noun usually singular
an activity that more and more people are becoming involved in
•The World Cup bandwagon is starting to roll.
Idiom: ↑jump on the bandwagon

Example Bank:
•The Scottish Nationalist bandwagon is gathering pace.
•The globalization bandwagon is gathering momentum.
•There is now a bandwagon effect with more and more companies following the trend.
•They seem to have got an anti-government bandwagon rolling.