A sign or poster with writing or a picture on it, usually meant to be displayed in public to announce something or protest.
From French 'placard,' possibly from Dutch 'plakkaard'; originally meant a document or edict, evolved to mean any public notice or sign.
During the Medieval period, placards were how laws were announced since most people couldn't read—officials would post them in public squares and read them aloud, making the placard a powerful tool of power!
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