She’s talking about the races of the people in the neighborhoods where the trees are.
I think there are a lot of groups all over the country who already practice ‘environmental activism’ by planting trees. Why does the government have to be Johnny Appleseed?
“The trees are all kept equal,
by hatchet, axe and saw.”
I recall a story about people planting trees in the black neighborhoods. They got chased out by the blacks. Not that they didn’t have anything against trees - but they were angry that none of the white progressives had asked them for their input or told them of their plans.