Trump's plan for a wall across the U.S. / Mexico border might be Cat 3 | Adult Movies Onlinea controversial idea, but it's proving inspiration gold for protesters and artists.

In Cleveland, at the Republican National Convention, groups of demonstrators joined into a human chain on the streets of the city Wednesday in an effort to "wall off Trump."

And in Hollywood, Trump's star has been surrounded with a concrete wall and razor wire courtesy of artist Plastic Jesus.

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"Hollywood sightseers on the famous walk of fame were confronted with an unusual edition to Trump’s famous star," the artist wrote on Instagram alongside a picture of the work. "Someone had built a 6-inch tall grey concrete wall around it. Complete with 'Keep out' signs and topped with razor wire."

"The unofficial addition to the iconic star appeared early Tuesday afternoon, to the amusement of onlookers."

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Trump's star was also augmented with a mute sign earlier this year, according to reports. In April, Plastic Jesus unveiled "No Trump Anywhere" parking signs across the city.

In June, meanwhile, the artist who painted a likeness of Trump with a micro-penis also mocked his proposal to build a wall, erecting a picket fence along a stretch of ground near the border as a "peaceful protest art piece."

Artist Illma Gore's work included a sign that read: "For Sale: American Dream."

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