This dataset contains the original anonymised microdata from the CAWI survey conducted in March 2025 for Work Package 4 (WP4) of the Recognition and Acknowledgement of Injustice to Strengthen Equality (RAISE) project. The study contained: Experiment 1: Perceptions of inequalities between the national majority group and minority groups across ethnicity, religion, and migration status, in the labour and housing markets and in policing; Experiment 2: Justifications for the existing inequalities, including individual, institutional, and structural discrimination, as well as non-discrimination-related explanations; Experiment 3 (WP7): Solidarity with the lower social classes, with and without migration background; Additional demographic, socio-economic, and attitudinal variables. Surveyed countries: Belgium, Germany, Hungary, the Netherlands, Poland, Turkey Sample size: ~2,000 respondents per country (total N = 12,004; age range 18–70) Method: Computer-Assisted Web Interviewing (CAWI) via Ipsos online panel iSay Ethics approval: Centre of Migration Research, University of Warsaw (approval no. CMR/EC/VI_2/2023)