"It's disrespectful to the person whose property this is, and it's disrespectful to the situation of what happened to us, " said Green.

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"It's a political stunt and it's very disrespectful to the elections process and disrespectful to everyone who is involved, " he said.

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Barbara Cathcart, chief executive of Nottingham Hospitals Charity which runs the Lewis Mighty Fund, described Stead's actions as "beyond disrespectful" to Lewis's memory and the work of his family and supporters.

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