In this paper we examine the characteristics of comments on Facebook pages of the most visited news portals in Slovenia in the period from 2010 to 2017. The analysis is based on a combination of big data (data created on the basis of mass data scraping of Facebook pages) and survey evaluations for ten thousand comments conducted by 30 annotators. We focus on socially unacceptable discourse (SUD) within two topics that were dividing public at the given time, namely the refugee crisis and the rights of LGBT people. The results show that the share of comments expressing SUD is high and stable - on both topics and on all three selected media around half of all comments are SUD. Surprisingly small differences in the internal structure and characteristics of this type of commenting were found between news portals, but there was more variation in the scope and the type of SUD. However, it is not possible to confirm the presence of organized or interrelated comment campaigns. The results are offering one of the first insights in the characteristics of the commentary environment in Slovenia, the time dimensions of commenting and the correlations between commentators. The paper will be published in the scientific journal Teorija in praksa in 2020.