"...disproportion [income] has reached destructive levels..."

"...But Marx did have an insight about the disproportionate power of the ownership of capital. The owner of capital decides where money goes, whereas the people who sell only their labor lack that power. This makes it hard for society to be shaped in their interests. In recent years, that disproportion has reached destructive levels, so if we don’t want to be a Marxist society, we need to put it right."

Source: "The Middle Class Squeeze" by Charles Moore, WSJ (behind pay wall)