The Argentina international has voiced his frustration with the way his side has been treated in recent months
The Blaugrana have been subjected to criticism following their pragmatic style of play under new head coach Gerardo Martino.
However, Mascherano believes their results speak for themselves and sees no reason for negativity, though admits there could be room for improvement.
"We are top of La Liga, we are through to the last 16 of the Champions League, we have won the Spanish Supercup. We must be getting some things right ...," Mascherano told Barca TV.
"People need to lighten up. We are not getting everything wrong, although we are aware that there are some areas that need improving.
"This team’s style is marked by players like Xavi, [Andres] Iniesta, [Cesc] Fabregas and [Sergio] Busquets who never play the long ball because they don’t know how to and have never tried it.
"The question is whether we should reinvent ourselves a little, so that teams have to find other solutions and look for alternatives."
Barcelona are currently preparing for the Liga encounter away against Betis as they aim to maintain their unbeaten status.