New seat installation on Mexican subway designed to highlight sexual harassment experienced by female passengers.

When a new style of seat suddenly appeared on Mexico City's metro system, it was labeled as inappropriate, uncomfortable, humiliating and embarrassing.

The seat, molded to include a protruding penis and chest, was designed to highlight sexual harassment experienced by female passengers.

The explanation next to the men-only label read: "It is uncomfortable to sit here, but that is nothing compared to the sexual violence that women suffer on their daily journeys."

While not a permanent fixture the installation is part of a campaign launched by UN Women and the Mexico City authorities called #NoEsDeHombres, which aimed to highlight sexual harassment on public transport.

Underneath a video of the stunt, which has been seen more than 700,000 times in the past 10 days, some viewers praised the idea, while others called it "sexist" and unfair to men.

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