A democracy advocacy group yesterday called on MPs to table in parliament a bill to grant an amnesty to people involved in political rallies from Sept 19, 2006 to May 10, 2011.
The 1992 May Heroes Relatives Committee said it backed the Independent National Rule of Law Commission's proposal for an amnesty.
The bill proposed by the commission contains six articles and would exclude authorities and leaders of political rallies.
The committee, comprising relatives of people who died in the 1992 "Black May" political protests, said the MPs should submit the bill to parliament for a debate this session.
If the House of Representatives failed to proceed, the group said NRLC chairman Ukrit Mongkol-navin would be approached to submit the bill on behalf of civic groups.
Under the charter, 10,000 eligible voters are allowed to sponsor a bill and submit it to parliament.
"Many people will lend support to the bill. They are fed up with conflicts among coloured groups," committee chairman Adul Khieuboribun said.
Mr Adul said Prime Minister Yingluck Shinawatra should make sure the bill goes before parliament by April.
He also urged Pheu Thai Party secretary-general Phumtham Wechayachai, also a former student activist, to advise Ms Yingluck on the amnesty issue.
Mr Adul said the prime minister needs to understand the ethics of protest leaders.
"Protest leaders don't ask to be covered by an amnesty because they know they will have to answer to the law," he said.
Democrat Party spokesman Chavanond Intarakomalyasut said the party did not oppose any move to grant an amnesty to those who joined protests in "good faith".