Why Anti-Anarchy?
Like AntiCA and most Americans, anarchists want liberty from oppressive government. However, anarchy does not result in lasting and secure liberty.
On the surface, lack of all government seems like the ultimate liberty. But it is not secure. The reality is that liberty is not secure without some level of government protection. History has shown that lack of government leads to insecurity and oppression on a local level (e.g., crime and chaos), regional (e.g., warlords) and national (being conquered or a new, oppressive government).
Anarchy creates a power vacuum that will sooner or later be filled by some form of order. Often, greater anarchy leads to greater chaos, which eventually results in a reactionary imposition of order through force. That new order is as likely as not to be totalitarian, with little to no respect for individual rights.
In the end, anarchy accomplishes nothing, except to wipe clean the old order and set the stage for a new order to be imposed. That is why anarchists have been referred to as useful fools or useful idiots. A far better and longer lasting system is one that secures order and safety on a national and local level, yet leaves individuals free to live their lives the way they choose. That is what the U.S. Constitution provides for.