Which of these government marketing campaigns was an actual initiative that backfired dramatically?

Marketing missteps aren't limited to the corporate world. Throughout history, government agencies and political campaigns have launched promotional efforts that backfired spectacularly. This poll tests your knowledge of notorious government marketing campaigns that, like retail failures, missed their target audience and became cautionary tales in political communication strategy. Can you identify which infamous government promotional campaign actually happened?

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The 2010 UK 'Go Home' immigration vans that drove through diverse neighborhoods with messages telling illegal immigrants to leave or face arrest
The 2015 US Environmental Protection Agency's 'Coal Is Cool' campaign that featured cartoon mascots promoting clean coal technology to children
Australia's 2018 'Digital Detox Day' initiative where government websites and services were deliberately shut down for 24 hours to encourage offline activities
Canada's 2016 'Igloo Tax Credit' campaign that offered tax breaks to citizens who built traditional snow houses to promote cultural heritage