Lego de facto renounced peaceful play the instant they
molded the first
human figure.
War is a human activity, the only
truly crucial elements of it are the
people involved. All the
swords,
axes,
muskets,
rifles,
pistols,
rockets,
chainsaws etc. that have been added to Lego since are just an added
bonus. If they'd wanted to
really avoid
violent play, they would have populated the Lego universe entirely with
animals, and not the
anthropomorphic kind either.
That said, most of my Lego creations (shabbily showcased at http://brickbuilder.50megs.com) are of a violent and warlike nature. I like making cool toys, and after all, the military do have the coolest toys.
Obligatory re-rebuttal: Animals are violent, sure, but they are not moral agents, and thus can do what comes naturally without any ethical arguments being attached...