Final answer:
People disliked Caesar's actions with the Gauls due to his brutal military campaign that killed or enslaved over a million Gauls and destroyed 800 towns. Furthermore, his integration of Gauls into the Roman elite as senators was controversial and seen as a means to consolidate power.
Step-by-step explanation:
People did not like what Caesar did with the Gauls for several reasons outlined in historical accounts. Most notably, Caesar's campaign was marked by brutal tactics that included the enslavement of hundreds of thousands of Gaelic people and the destruction of their settlements. According to historical records such as those of Appian's Roman History, Caesar fought over 4 million Gauls, with approximately a million being captured or killed and 800 towns being conquered or having allegiance revoked. The comprehensive subjugation by Caesar led to a loss of Celtic culture and the imposition of Latin as the principal language. Adding to the discontent, Caesar also integrated some of the Gauls into the Roman elite, even including them as senators. This move was met with disdain by existing Roman senators, as Caesar was using his Gaul allies to consolidate his power and reward those who supported him. The integration proved controversial as it afforded the conquered Gauls significant influence within the Roman society.