Trump supporter drives 'Build the Wall' float past Christchurch attack vigil in Cleveland

Robert Cortis' float.
Robert Cortis' float. Photo credit: Facebook/TheTRUMPUNITYBridge

A vigil in the US to remember those killed in the Christchurch terror attack has been interrupted by a Donald Trump supporter who drove his 'Build the Wall' float past mourners.

Robert Cortis drove over 170km - from Michigan to Ohio - to twice drive his huge advertisement for Trump's controversial policy past the Cleveland City Hall.

WOIO radio station in Cleveland reported the float left mourners in disbelief as it rolled past the first time.

Despite the disruption, speakers - including Cleveland Mayor Frank Jackson - managed to stay on script and focused on the tragedy.

The float then returned for a second appearance, this time playing 'God Bless America' loudly from its speakers.

Cortis has claimed innocence, telling Cleveland 19 he was leaving the Rock and Roll Hall of Fame and happened to drive by city hall as the memorial was being held.

The activist has made many appearances with the float, one of what he calls his 'Unity Bridges', since Trump was on the campaign trail.

He claims the floats in their various forms aim to bring harmony to the US and are also available for hire at weddings and birthdays.

"When we stand together in unity, we become the greatest, most powerful country on Earth," Cortis' website states.