Tour guides at the Tolpuddle Martyrs Museum in Dorset are striking over pay.
They are paid £26 a day but are demanding £50 – still £25 below the industry recommended rate of £75.
They have pledged to strike until the council negotiates.
The museum celebrates the six farm workers who were sentenced to transportation to Australia in 1834 for joining a trade union.
But one of the 12 guides appears to have missed the point of the museum and is continuing to work during the strike.