On Tuesday, French public sector unions called on some five million civil servants to join in over 130 planned marches against Macron’s labor reforms. The protesters opposed axing civil service jobs, salary freezes and stricter sick-leave rules.

In Paris over 25,000 thousand marched through the city, according to police estimates. However, one of the trade unions taking part on the strike, the CGT, said that twice that number were in attendance, AP reports.

While the rally started peacefully, some people smashed windows and painted walls and eventually started clashing with police.