I am a Pakistani citizen with an Italian residence permit (Polizia di Stato). I would like to travel to Mexico over Christmas. I don't have a visa. Will my Italian residence permit allow me to enter Mexico?
Yes you can, You don't need a visa.
With the purpose of facilitating and promoting travel to Mexico, effective May 2016 all those foreign nationals, regardless of their nationality, visiting Mexico for tourism, business or transit are NOT required to obtain a Mexican visa IF they hold a valid (non-expired) Visa or Permanent Residence of any of this countries: United States of America, Canada, Japan, United Kingdom or Schengen area (European Union).