Most denominations have a network to inform you and to suggest ways of joining in advocacy. Additional organizations are listed in Resources. In addition, advocate for alternative or more responsible travel among those who you come in contact with. Don't continue to go thirsty for news. You will notice that you aren't getting as much news as you would like in the North American media.
Lists are in the resource section.
Continue to read, watch, and listen critically. And then write letters to the editor or station manager when you find material which is unfair, prejudiced, or downright wrong. See Media Watch and contacts . Also write letters to people in power in your government.