What is Z meaning in Russia?

Excuse me, could you please explain to me the significance of the letter 'Z' in Russia? I've noticed it being displayed quite frequently recently, but I'm not entirely sure what it represents or why it's being used. Is it a symbol of some sort? Or does it have a specific meaning within the cultural or political context of the country? I'm quite curious to learn more about it, and I'd appreciate it if you could clarify this matter for me.