Going to Riga, Latvia

I visited Liepaja and Riga last year when I was 18. I do not think Latvia is a dangerous place but to be extra sure standard things apply
-be wary of pickpockets/scams/overpriced places near tourist areas
-don't walk in unlit/sketchy areas at night alone or get very drunk

I however did walk around the market and area near the Stalin skyscraper alone at night drunk and all I was asked was for cigs/a light by russians. You will be fine. I recommend the market and the Uzbek bakery there.

I say be wary as to just think critically not that it is a given you will get scammed

Pretty much what >>1286198 posted.
By adhering to "don't hang out in sketchy areas at night" rule and generally using common sense I've lived in Latvia for 30 years without being mugged, pickpocketed or scammed. And believe me, crime rate in the 90's was way higher than now.