you could, IMO, put AND instead of OR

My impression (Judging from what we have in front of us, and without further context..) is that
it's not exactly a policy which is referred to, but a kind of reprehensible way of acting, in the name of almighty technology.
My stab at the whole sentence would be something like
"Science and technology can be used in a harmonious and individual way, but they are often used as an justification/alibi/rationalisation of alienation, oppression and/or consumerism.
Yes, and I did put alienation as an extra noun (rather than keeping it as an adjective) on purpose!

Another idea:

Even if they often serve as alibis for the alienating effects of law enforcement or consumerist policies, science and technology can be used in harmonious and individual ways.

Or, somewhat more forcefully:

Even if they often serve as alibis for the alienating politics of the police state or consumerism, science and technology can be used in harmonious and individual ways.

It really depends on the register of the rest of the document. I imagine "alienating politics" and "police state" could work in a text about electronic music.

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Note added at 4 hrs (2013-01-29 17:27:23 GMT)
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I'm thinking that the opposition in the two clauses between alienation and harmony may be an implicit reference to Marx's theory of alienation. See https://en.wikipedia.org/wiki/Marx's_theory_of_alienation :

"Entfremdung (estrangement) is Karl Marx’s theory of alienation, which describes the separation of things that naturally belong together; and the placement of antagonism between things that are properly in harmony. Theoretically, Entfremdung describes the social alienation (estrangement) of people from aspects of their human nature (Gattungswesen, “species-essence”) as a consequence of living in a society stratified into social classes; Marx had earlier expressed the entfremdung theory in the Economic and Philosophic Manuscripts of 1844 (1927). Philosophically, the Entfremdung theory relies upon The Essence of Christianity (1841), by Ludwig Feuerbach, which argues that the supernatural idea of “God” has alienated the natural characteristics of the human being."

In any case, I'm inclined to try to include "alienation" in the translation, if possible.

There are a few points here:

policiere: I think this word is probably loaded in all sorts of ways, but I think they are generally referring to the security and policing apparatus of the state. These days, this may fall under homeland "security", internet "security", some of which are fairly innocuous and expected policing/security activities and some of which stray into the range of invasive, anti-democratic and other sorts of things that are troubling to liberal-minded (in the personal freedoms and privacy rights sense) sort of person.

Mercantile: calling this "trade policy" is mostly an educated guess. The use of advanced analytical techniques, which are complex and thus expensive to operate, mean that bigger companies are in a better position to exploit their digital-age data management and analysis techniques than their smaller competitors. In my opinion, they are off the mark to make the criticism they are trying to make about trade policy, because it has more to do with scale economies in trade-related knowledge management/production, and not policy which for such an "alienating" digital divide. Rather, the mass of data available is better than the purely private data of ages long gone: the big guys still have an advantage in data management and production, but this is less so in the digital age. In any case, imo the writer views trade policy as a major reason for this form of divide and thus states it this way.

alienating: I think this word should could straight through in the English due to its presence and use in socialist/left wing/ ... or what have you ... writing. It may very well be divisive policy, especially in that there are winners and losers, and entrenched interests makes this a divisive issue. But using alienating helps place it within a certain discourse or way of thinking about social and economic systems, and knowledge production/management in particular. It could also just be alienating in the sense that it turns some people off (they don't like such policies).

OK, so that tells a nice story :) maybe that's where the writer is coming from and what the writer is getting at, in which case "an alienating security or trade policy" might do the trick.

This is what I concluded from the above-given text.