Organisers of yesterday's anti-water charges demonstration have hailed it a success.
At least 30,000 turned out yesterday, calling for water charges to be scrapped - though organisers claim the numbers were several times higher than that.
Another national rally is planned for January 31.
People Before Profit TD Richard Boyd-Barrett said the Government needs to realise that people won't back down.
"The fact that they've sustained themselves now for three months, and they've been getting bigger and bigger - to have these sort of numbers mid-week were people took days off work was really a very strong indication of the determination of people."
Meanwhile, six people arrested during yesterday's protests have been released without charge.
Although the protest was generally peaceful, a number of arrests were made for public order offences.
Four were detained on O'Connell Bridge when gardaí had to move protesters who were blocking traffic last night.
Two were detained on Kildare Street following an earlier incident.