Original sentence: A number of organizations oppose the tobacco control movement, on libertarian grounds, among other motivations.Other politically conservative or libertarian groups include the Cato Institute, which refers to the "anti-smoking lobby" as a "war driven by greed and bad science" and the Heartland Institute
Edited sentence: , a group whose mission is "to discover, develop, and promote free-market solutions to social and economic problems.A number of organizations oppose the tobacco control movement, either for politically-charged reasons, such as civil rights, or for scientific reasons.Other politically motivated groups include the Cato Institute, which refers to the "anti-smoking lobby" as a "war driven by greed and bad science" and the Heartland Institute