Search for: [Subject = social marketing] OR [Subject = social campaigns] OR [Subject = social media] OR [Subject = social media influencers] OR [Subject = hate speech] OR [Subject = value of pro\-social activity] OR [Title = Impact of hate speech on building the value of pro\-social activities. Perspective of author and social media user] OR [Creator = Kraus, Zuzanna] OR [Creator = Kuczamer\-Kłopotowska, Sylwia] OR [Creator = Chmielewski, Mariusz]