No one can deny it. It doesn't obviate peace. It makes peace possible.

没人可，它会为我们带来和平，让实和平成为可能。

After the obligatory backward glances to the colonial era—in which the sort of social shaming possible only in small, homogeneous communities obviated the need for standing police forces.

作者必要地回顾了一下殖民地时期，在当时，战警的只是存在于小的、同类的社区中，为的是消除常规警力的必要。