From Wikipedia. ..
"The Fiestas Patrias (literally Homeland Holidays)[1] of Chile consist of two days, with a third one added on some years:
- 18 September, in commemoration of the proclamation of the First Governing Body of 1810, and marking the beginning of the Chilean Independence process.
- 19 September, known as the "Day of the Glories of the Army"............
- In Chile, it is mandatory to hang the Chilean flag from every building in the country on 18 and 19 September (and 21 May as well).[8] The flag should be in perfect condition, hung from a white pole or from the front of every building, horizontally or vertically. If hung vertically, the star should always be in the upper left corner, visible from the front of the building. Violation of this rule is punishable with fines in local currency of up to 40,000 pesos (about US$80),[9] although it is not strictly enforced."
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In view of the above I Dont see how they can say that no principle is involved . Displaying the flag tells the community that you are patriots and supporting " the glorious army"....