I have to disagree. While I agree that Muslims should concern themselves with the world around them and strive to make it a better place, one's focus should always be on pleasing Allah and obtaining paradise. I've seen way too many Muslims act as if the entire point of Islam is to simply set up some political state, when in reality, the entire goal of Islam is obtaining salvation from Allah. If you wrap your hopes and dreams around the dunya, you're only going to end up dissapointed.