The rally was the sixth staged by the Ya Basta (Enough Is Enough) group, this time in response to a violent clash in which five people were killed and several dozen injured when police tried to disperse protesters at Phan Fah on Tuesday.
Ya Basta is campaigning for peace and is opposed to the Shutdown Bangkok campaign by the anti-government People's Democratic Reform Committee (PDRC).
Natee and Adchara Saravari, activists who work with homeless people at Sanam Luang, said they would like to see the peaceful end of irresponsible demonstrations as soon as possible.
The couple have joined the activities previously.
"People should be able to live their normal lives. Society should have some peace and we should talk to resolve the conflicts. We don't want to have our baby due in July born amid turbulence, " said Natee, touching Adchara's swollen belly.
Pairoj Poonsawat, 18, said he would like to plead for real peace not lip-service.
"Apart from the deaths, there are also other types of violence, especially hate speech from the rally stages," said the first-year Communication Arts (New Media) student from Suansunantha Rajabhat University.
His friend Nattha Ponman from the College of Fine Arts agreed.
"I have no idea when the problems will end or how. But I believe people have to talk," said the 19-year-old first-year student.
She said she was dismayed by the sexist and discriminatory remarks directed by some speakers against caretaker Prime Minister Yingluck Shinawatra.
"As a woman, I think she should get some appropriate treatment. She can be criticised for poor management but not because she's a woman," Ms Nattha said.
A 54-year-old couple joined the candle-lighting ceremony with their only daughter from Satree Witthaya School.
"This protest is different from the 2010 one as then they demanded only parliamentary dissolution, but now the PDRC keeps shifting from one demand to another," said the mother.
"It is our power. We are sovereign. But why does the PDRC show up and command everyone to follow - from the military to banks and media?" asked the father.
While they were walking past the October 6 monument near the main gate of the university, the man said his daughter asked him why students in the 1970s had joined the Communists in the jungle.
"That's why I told her we don't want to see such circumstances to happen again," he said. "People who think differently should be able to live together without being blasted or hunted by the PDRC. In fact, they are the ones who are acting undemocratically."
The parents reaffirmed that they felt strongly that rule of law needed to be upheld because they had the only one child and she deserved to inherit a meaningful society.
"Let those defined by the election lead the country through consultations," they said.