"Warning signs" are for the future. The comment was equating the extreme division of the 60s with now, not the future. You can make the argument that the presen

"Warning signs" are for the future. The comment was equating the extreme division of the 60s with now, not the future. You can make the argument that the present division is a warning sign of a future that will be equivalent to the division of the 60s but that's a very different argument.