Environmentalists pushing U.S. officials and other nations to end subsidies for fossil fuel industries are hunting big game: Teen pop star Justin Bieber.

The climate advocacy group 350.org and other activists are launching a 24-hour “Twitterstorm” Monday to get as many messages over the social media site as possible using the hashtag #endfossilfuelsubsidies.

Their goal is to break the record for the most identical social media messages sent over a 24 hour period. According to fan sites and other reports, it currently belongs to Bieber fans who jointly tallied 322,224 of the same messages for Bieber on his 18th birthday in early March.