"guerrilla theater" meaning in English

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          "ref": "1988 August 20, Chris Bull, “ACT UP Zaps Fisons Co.”, in Gay Community News, volume 16, number 6, page 1",
          "text": "\"R.I.P. Brother, Sister, Friend, Lover, Unknown,\" read the cardboard tombstones in a mock cemetery set up by ACT UP/Boston on the front lawn of Fisons Pharmaceutical Corporation Aug. 4. In an audacious display of guerrilla theater, six ACT UP pallbearers, carrying a black coffin, led a procession of sign-toting protesters through the cemetery to the front door of the company.",
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        "A form of protest performance art carried out in public."
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        "guerrilla theater"
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  "word": "guerrilla theater"
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          "ref": "1988 August 20, Chris Bull, “ACT UP Zaps Fisons Co.”, in Gay Community News, volume 16, number 6, page 1",
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        "guerrilla theater"
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  "word": "guerrilla theater"
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