Political undertones in Science Fiction?

After noticing the political undertones in Star Wars 1-3, I had a glance at other SciFi flicks and realized that there seems to be apattern.

Star Trek Voyager is full of anti-business references, some blatantly ridiculing business, others all but endorcing communism. Most interestingly, traders and merchants are again typically shown as ugly, non-humanoid ceatures, and are usually the bad guys episode after episode, with the exemption of 'converted traders', who help the Voyager crew and either morph into something cuddly, or are humanoids to begin with.

Of course, the mere subject matter of a Starfleet crew with an omni-potent and benevolent captain being in absolute power, is a blatant endorsment of militarism and state control.

Next, Babylon 5 seems more neutral, occasionally even pro-business and mostly anti-establishment.Yet the political undertones are clearly left-liberal. Despite the apparent theme of wheeling and dealing being preferable to confrontation, the heros have strong communal sentiments and always seem to know what is best for the people. The occasional demands for sacrifices in order to help others and the New Agey spiritualism of the non-human good guys, as opposed to their ridiculous looking counter-parts, further suggest an underlying anti-business message.

What puzzles me is the question if the shows are written by liberals and pocket-commies for fitting audiences, or if they are written for general audiences and are meant to subtly influence these same audiences?

In other words, are geeks commies at heart, or does someone try to make them commies?Both options could have quite scary repercussions in the long run.

Imagine, business being dependent on the work of a tech elite that endorses socialism.

Before you dismiss my ramblings outright, consider that if everyone is out to get you, then it's not paranoia ;o)