Activists are holding Polish flags and posters saying "TTIP and CETA are toxic agreements", "Stop corporate dictatorship" and others.
CETA aims to establish a free trade zone between Canada and the European Union, though it has been criticized in Europe. Opponents fear it would undermine standards and regulations on environmental protection, health, safety and workers' rights.
The TTIP, negotiations on which have been ongoing since 2013, seeks to establish a free trade zone between the two sides of Atlantic. Since the start of the talks, the deal has drawn severe criticism for the lack of transparency. Its opponents also express concern over the tremendous power it would potentially give to international corporations and the fact that it could seriously violate ecological standards.