Indeed, "otherwise [his] visit's wasted"(I.i.18). However, his justification is paradoxical because with the construction of this wall, he is doing exactly the opposite, i.e. instead of making people free, he is imprisoning them. So Bond wants to demonstrate that recourse to violence as the means to realize our ambitions has tragic consequences even though we act for the best, out of the best feeling. .
Moreover, Bond's philosophy is often transcribed through Lear's speeches: "It is perverted to want your pleasure where it makes others suffer" (I.i.21). Here his daughters, marrying his enemies, have betrayed him. He is the victim of their ambitions. However, here he is once again contradictory because he is doing exactly the opposite of what he is saying. In other words, Lear by ordering a "drumhead trial" even though there won"t be any, is unjust. He makes the decisions and nobody can say anything. This problem of despotism will be treated later on the essay.
Bond speaking of "ends and means" is extremely contemporary. Nowadays, this problem still exists. People think that the only answer to an attack is to make war or throw bombs on the enemy even though we make it worse. For example, what president Bush is currently doing demonstrates it very well: his ambition, fighting terrorism, is very good but the means he uses, i.e. war, in other words violence, is the worst we can imagine. In conclusion, ends here don"t justify the means because it doesn"t solve anything but makes it worse: violence only engenders more violence.
It must further be noted that violence is often connected to power. It is a symbol of dictatorship; it has causes and effects just like dictatorship. Bodice's speech in scene 6 of Act II when she is defeated, reflects exactly this argument: "O you are cruel when you get a little power- (II.vi.75). In fact, as we have seen before the most important thing is how we achieve our ambition.
