In world first, Russian chess player poisons rival's board with mercury
arstechnica.com
arstechnica.com
Got to wonder about headlines like this, seems the standard these days is get as close to a clickbait title as you can without crossing the line. The inclusion of "Russian" especially has weird implications, is this something that is actually very common in other nationalities which Russia had stood strong against up until now? I find the headline far more interesting than the article which really does not add much in the way of information or clear up all the ambiguities implied by the headline.
If we are to believe the article, poisoning an opponent has not happened before, so "In world first" is justified.
Mentioning the nationality is common in news reporting. Maybe look up the "Florida Man" meme and don't be sore anymore.
Some people think "Russian bad".
Some other people think "some people think Russian bad and so whenever anyone who mentions that a person is Russian they must be trying to trigger negative associations".