I'm not sure how much you can read into one particular comment thread. But there has been a discernible anti-immigration zealotry expressed by Grist readers over the last week, in response to this post.
On the thread, Randy Cunningham pleaded with his fellow greens to be more compassionate. He finally gave up, despairing:
Most of the comments posted on this article have depressed the hell out of me. I love the environmental movement, and what I have been hearing here reminds me of when I used to hear my beloved grandparents use the N word. It embarrassed me. This conversation embarrasses me. It is a parade of our dirty laundry. If I were introducing someone to our movement, this is the last place I would want them to look. It feels mean. It feels selfish. It feels xeonphobic. It feels frankly racist. I want to take a shower after reading ...