You don't actually have to be aggressive to wear this shirt. In modern political discourse, the existence of the State of Israel is referred to as an act of aggression, and merely affirming its right to exist is treated as a hate crime. (At least, that's what the folks who were busy tearing down missing person posters for abducted Jewish children told us, between fits of maniacal laughter.)
Although often used as a codeword for Jew, "Zionist" actually just means someone who supports the right of the Jewish people to dwell safely and securely in their ancestral homeland. Zionists span most of the political spectrum, from liberal socialists to traditional conservatives. Our numbers tend to taper off at the ends though, as the extreme left and extreme right are openly hostile toward all things Jewish (and if you don't know what we're talking about, just Google "Horsehoe Theory.")
If you're Jewish, or a friend of the Jewish people, and tired of explaining your right to exist, our "Zionist Aggressor" design was made for you. The t-shirt features the Maccabee Apparel Coat of Arms logo on the right sleeve.