Jatuporn led the Red-shirts in the massive 2010 Thai political protests that seized control of downtown Bangkok and culminated in violence in April and May. Jatuporn, Nattawut Saikua and other Red-Shirt leaders surrendered to police to prevent further bloodshed following the military crackdown on 19 May 2010.[3]
Jatuporn, along with Nisit Sinthuprai, was jailed on terrorism charges for alleged involvement in the shooting of Army Major General "Seh Daeng" Khattiya Sawasdipol,[4] after bail was denied on 12 May 2011.
Jatuporn, number 8 on the Pheu Thai party list candidates, was unable to vote in the general election on 3 July. This disqualified him from serving as a Member of Parliament.[5] However, when the House of Representatives was convoked, the Election Commission (EC) ignored this and endorsed Jatuporn's status as a party list MP,[6] and he was released on bail on 2 August 2011.[7]
In November 2011, the Election Commission reconsidered its approval, forwarding the matter to the Constitutional Court. On 18 May 2012, the court ruled that Jatuporn was ineligible.[8]
On 16 March 2014, he was named the leader of the Red Shirts, replacing Thida Thavornseth.[9]
In July 2017, Prompan was given a one-year prison sentence for defaming former Prime Minister Abhisit Vejjajiva.[1] In 2010, Prompan had called Vejjajiva a murderer for using military force against civilians in a protest which resulted in the death of dozens of civilians.[1]