Wiktionary
n. 1 The combination of fascist politics with support for ecological concerns. 2 (context derogatory English) aggressive environmental activism.
Wikipedia
Ecofascism is a pejorative term used by opponents of the environmental movement to accuse environmental activists of fascism; in the UK, it has also been used to refer to far-right efforts to gain influence within the Green Party. Some writers have used it to refer to the hypothetical danger of future dystopian governments, which might resort to extreme or "fascist" policies to deal with environmental issues. Other writers have used it to refer to segments of historical fascist movements that focused on environmental issues.
Usage examples of "ecofascism".
As if moved by the woman's rhetoric, as if she didn't think it was ecofascism, Holly said, "I give as much as I can every year to the Nature Conservancy, and I think of myself as an environmentalist, but I see that my consciousness hasn't been raised as far as yours.