Korn said it is a right of every Thai to don red which is a colour of the national flag.
The red shirts do not have an exclusive right to the colour because all Thais should be proud of the colour on their flag, he said.
If the red shirts are true advocates of justice, then they should not discriminate against the others who are seeking true justice and not the pseudo-advocacy designed to cite reconciliation as a guise to whitewash former prime minister Thaksin Shinawatra, he said.
A number of Democrats, including Theptai Seanapong, put on red shirts in a bid to deny the red shirts from monopolising the colour.