They have the same sort of cruelty and sadism that fundamentalist religious fanatics have--the kind that is ruthless, brutal, merciless, self-righteous, and joyful in its cruelty.
At first, like most people, I supported them and this movement, but I now have nothing but disgust for them and their actions.
As a rule of thumb, if "environmentalists" are for something, I oppose it. If they are against something, I support it. I still think each thing through--let me hasten to say--but experience and careful observation have taught me that these people are not to be encouraged or supported.
"Environmentalists" are not harmless do-gooders. They must not be supported. Do not give money to "environmentalist charities". Do not support politicians who support these "environmentalists" and their organizations.
A few months ago an attractive young lady showed up on my doorstep to enlighten me about all the good works of the Sierra Club and to solicite a donation. I proceded to give her a lecture she will not likely forget. It ended with "so you see, there is not a chance in hell that I will give Sierra Club even so much as one dime." She was one of the evil ones, I could see it in her eye.