A hand holding a brass door knocker on a wooden door, preparing to knock. Close-up of aesthetic ancient architecture.
Man walks up to a front door of a house and knocks on the door holding a notebook as if he is taking a survey, volunteering for a political campaign, or running a census
Woman persistently knocking on the door, close-up
Male hand knocking on the door close-up
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A young man persistently knocks on the door of a building
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A young man persistently knocks on the door of a building