@Remus2
As I understood it, it wasn't healthy to be a Russian national in Riga at the time.
Some of them certainly believed so. But you must understand that russian-speakers collectively still were a slight majority in Riga at that time, and it was mostly self inflicted and propaganda supported perception, although their status did change. In USSR Russians were automatic upper class, enjoying both tangible and, perhaps more importantly, a slew of highly intangible privileges.
Also, Soviet military officers got guaranteed housing and work offers at the locale of their decommissioning, and it was popular for savvy officers to arrange their service in a way it let them discharge in Baltic, with was seen as "Π²ΡΡ-ΡΠ°ΠΊΠΈ Π΅Π²ΡΠΎΠΏΠ°" (~ nevertheless Europe) with tangibly higher standards of living than deep Russia. Many of those people were objectively talented and skilled, but unfortunately tended to be deeply indoctrinated -- with was another advantage until it wasn't.
We did this neat legal trick, we didn't start a new country in 1991, we restored constitution of 1922. That let us declare all arrivals and their descendants since 1940 residents and NOT citizens automatically, while offering them to apply for citizenship immediately. That required language and history exams, language they had never needed, and history interpretation they had quasi-religious objections with. As may be expected when you take privileges away and was partially by design, a significant number of people are remaining offended by that, and still refuse naturalization today opting to keep the internationally unique non-citizen status.
Faning ethnic hatred leading to a need to "defend" Russian "brothers" was a propaganda goal effective immediately, and we had no capability no real will to counter that fearmongering, as long provocations could be avoided, and were extremely tolerant folk (to our own peril).
Those who bought in that and did leave, especially those who had been here for a life, discovered they aren't welcome over there at all. They were effectively speaking a different Russian dialect and behaved funny, and thus were immediately declared foriegn and "Π±Π°Π»ΡΠΈΠΉΡΠΊΠΈΠ΅ Π½Π°ΡΠΈΡΡΡ" despite their own beliefs (because yes, the propaganda was ever so much thicker). We got quite a few of them back again (and much quieter, even if not actually loyal).
A couple of the UK citizens on our team were kidnapped out of a nightclub. Something (nightclubs) we were specifically told to avoid btw.
Indeed, day and night city was two different worlds, day ruled by (unwritten) common laws, and night was, almost anything goes, a sin city with celebrity criminals. Nightclubs weren't supposed safe by locals either, but, I don't know, maybe our risk aversion back then was just so low it was... well, it was what it was, night life was rich but risky.
Being an obvious foreigner and/or flaunting money would indeed get you heightened attention from everyone, freelance underage whores to very nasty gentlemen alike, and since law enforcement was not only dysfunctional but very nearly just one of competing mob structures, your risk was your own. By the end of the century it was just a memory of a legendary time though.
At one point reaching 450 LVR:1 USD on the black market.
Black market? There was legal currency exchange on every corner by then... some of them a real shady business started from scratch that very morning though, and you could perhaps get better rates on hand, against even more risk, understandably. USD was almost a second currency in circulation and the official rate you knew like weather forecast, morning and afternoon.
One of those school years my allowance from dad went from 5 LVR in September to 500 LVR by May without increasing at any point (he's an accountant). But thanks to a few genius guys we got it light by comparison to what happened to Soviet/Russian roubles. Lats were introduced at valuation above Β£ with expectations of more inflation, but there was surprisingly little afterwards. Then, we switched over to euro on a particularly bad day.