If one wants to dwell on this-look deeply at available info on the Internet.
Unfortunately-the truth is, they indeed did major changes to language laws-all to suppress Russian language and heritage ,for the many millions of Russians living in the country.They had "one size fits all "approach to all citizens on Non Ukrainian nationality,and they cut and limited many Pre Existing laws.Far and wide.
Despite the fact-Ukrainian language was not jeopardized by those "other"minorities,because they are spoken by only few 100 000 ppl per nationality.
When many impacted EU countries-bordering Ukraine,asked to exempt or Re Instate the laws in existence for the past 40-50 years ,for their minorities living in current Ukraine from clear "forced"Ukrainization trend -They flatly ignored at best, refused at worst.
One should try -if so much interested in this topic, to find information from other sources too, not just the biased currently available one.
All this does not justify the deaths of the innocent and the destruction-however may help understand few things better.