tree hugger

Etymology
Compound of 🇰🇲. Popularized after the 1970's Chipko movement in India, who resorted to actual group hugging of trees in order to prevent deforestation. Tommy James claims that his 1971 song "Draggin' the Line" popularized the phrase. https://americansongwriter.com/meaning-behind-tommy-james-draggin-the-line/

Noun

 * 1)  An environmental campaigner, especially one who aims to restrict logging and especially one who uses dramatic, attention-grabbing methods of obstruction.
 * 2) * 1999, Mother Jones Magazine (Mar–Apr 1999, page 64)
 * Animal liberationists like Rosmarino resented the tree huggers' insensitivity to animals and reluctance to risk jail time, while more mainstream environmentalists like AFR's Jeff Berman disagreed with the bunny huggers' wacky morality and in-your-face tactics. The two groups' differences were in full view as they teamed up to parade through Vail last winter.
 * 1)  A hippie.
 * 1)  A hippie.

Translations

 * Finnish: ,
 * German: Baumschmuser, Baumschmuserin
 * Romanian:
 * Swedish: trädkramare