Telegram's decentralized structure and use of "secret chats" make it difficult for authorities to monitor. However, it is not impossible. Spanish police (Guardia Civil and Policía Nacional) have cybercrime units (Grupo de Delitos Telemáticos) that actively:

which focus on curated "albums"—collections of photos or videos that are shared within private or restricted channels. Telegram as a Platform:

The text %C3%A1lbum indicates that the link or search query was not processed correctly by a website.

Canales y bots en Telegram para descargar música - Blog de Fonoma

The involvement of "poli" (a colloquial term for police) in the name of a band could imply a unique dynamic where law enforcement and community intersect through music. This could manifest in several ways: the band might be composed of police officers who are also musicians, they might have a thematic focus on community policing or social issues, or they could simply have a name that reflects their regional identity and a playful nod to law enforcement.