The wall is the United States means of liberating the Mexican people. By forcing those who are willing to take action (invade another country) to stay, they are promoting action.
You have already seen the mass excerising which has taken place with a mere 20% gas hike. Imagine if they had access to firearms, how the Mexican government would react, it would be a new mexican revolution.
It's time that the US made the Mexican people a priority. It's time we armed the ordinary people so they could defend themselves from tyranny; by the cartels, by their own government.
The wall is simply the first step in the new mexican revolution.