And, the answer lies in the inverse question: “Why not now?” The monuments are falling exactly at the time when they ought to. They’re being toppled by the sheer force of the tension between our foundational values as a country, on the one hand, and their meaning, on the other.
Monuments are not architectural pieces. They hold symbolical power, projecting the foundational values and authority of the State. What I mean, therefore, is that monuments serve a legitimising role in society. They cultivate popular acceptance and consent to the authority of the State.