Personally, I see the following:
1) The police officer wasn't protecting, but rather investigating (since they were monitoring two people, and only 2 characters can conduct surveillance).
2) The Triad doesn't block anyone on the first night, so we can skip this point.
3) The casino owner seems to have blocked the Russian Mafia... Although, it's possible he blocked someone else, and the Triad killed the hitman.
4) The detective checked Stan or Lisa...
5) As we've established, the police officer wasn't protecting anyone...
6) The Triad successfully strangled Gur (why the Triad? The murder style isn't Russian).
7) Either Gur was the hitman, or the casino owner was doing a good job, but the murder didn't happen...
8) and 9) These points are too vague to draw any conclusions.
10) Even more so...
That's how it looks...
Now, regarding the suspects, the purple strangulation mark...
Cash has аж 2 suspicions right away: a rope around his neck and a guitar in his signature... + he's again finding evidence for himself in a friendly way, psychologically creating the illusion of innocence...
WhiteLiz is indeed an extremely convenient tool for strangulation...
Now, Meg... A bunch of braided bracelets and a guitar certainly suggest something... but a guitar doesn't seem like a good instrument...
You need to pull out a string, attach comfortable handles... it's not ideal...
And now, the main problem: they all voted for NNV!?? This is very strange for the Mafia...
I don't know... In general, Cash seems to be the main suspect, but he's good (even for the Mafia) at finding and interpreting evidence, so I feel sorry for him...
So: NNV