Even if majority of parliament supports Russian as official language (they don't) - there still needs to be a referendum.
Currently majority of Latvians simply do not want to give it any status - reminds them of Soviet Union, etc.
How do you think they can change their minds?

Russians should start discussions about that issue, because otherwise they will never get any official status for their language.
"Мы вам покажем кузькину мать!" and "Бей гансов!" certainly will not help
What is their agenda? Are they Russian speakers born in Latvia?
Divide and conquer.
Create conflict between nationalities and then try to get more votes from more radical people.
Sadly such tactics are used both by russian and latvian radical nationalists to get into the parliament.
I'm really tired that in our country political parties are not divided by ideologies, but by nationalities.

Latvieti nepadodies - krievi nāk!!! (Fellow Latvians - do not surrender - Russians are coming!!!)
Русские - не сдаваться!!! - Mы ем покажем!!!
This bullshit is repeated before every elections for 20 years...