Anurak allegedly held a gathering attended by some 40 people to commemorate Seh Daeng who was shot dead during the protests.
But the alleged gathering violated an emergency decree that requires social distancing to prevent the spread of Covid-19.
He was taken to Lumpini Police Station. He denied the accusation and was let out on a bail of Bt30,000. Police will collect evidence to consider whether he should be prosecuted.