They were hated because they were Jews employed by the Romans to collect imperial taxes levied by their oppressors; a tax the Jews always chafed under (Matthew 22:17). They were considered to be traitors. (It should be understood that these tax collectors, who are equated with "sinners" several times in the New Testament, had nothing to do with the "temple tax" collected by the Jews.)
They were not hated by Jesus. He asked one of them (Matthew) to be one of His disciples in Matthew 9:9-13.
Tax collectors were disliked and looked down on by society in Bible times, because many of them would demand more than the actual tax and pocket the excess for themselves, as seen in the story of Zacchaeus found in Luke 19:1-10.
The Jews generally avoided voluntary association with tax collectors and classified them with persons known to be sinners, including harlots. They also resented tax collectors because of their being in the service of a foreign power, Rome, and in close contact with "unclean" Gentiles.
The Jews hated the tax collectors because they collected money from their own people to give to the Roman Government
The publicans cheated the government out of money so they could help others.
The tax-collectors in many cases were unrighteous people who collected more than was required and kept the profit for themselves (Talmud, Sanhedrin 25b).
The Jews disliked tax collectors because they were fellow Jews working for the Roman leaders.
Jews hated tax collectors, as they were Jewish people collecting tax from the Jews for the Romans.
Some antipathy would naturally arise even if the tax collectors just collected what was due - no one likes to pay taxes... But the Romans allowed tax collectors to add their own charge to what was owed - sort of a "handling charge." The amount they added was unregulated, but still backed by Roman military might, so some tax collectors were actually robbing the citizenry. Because of this, tax collectors were widely seen as a thieving class.
I'm assuming (since the question is posted under the religion section) you are referring to the tax collectors in the Bible. The answer is yes. The Jews did not like tax collectors because they a) represented a foreign government and foreign leadership and b) took their money. Stories from the Bible like Zacchaeus show the generally poor opinion the Hebrews had of tax collectors. In other passages, Jesus is criticized by the religious leaders for associating with tax collectors and sinners.
The whiskey boys hurt the tax collectors all the time.
the king maybe
Matthew, also known as Levi, was a tax collector in Capernaum. His acquaintances likely included other tax collectors, Jews who were ostracized for collaborating with the Romans, as well as other local traders and businessmen. Additionally, he may have interacted with Jesus and his disciples as he was called to follow Jesus and became one of the twelve apostles.
They were tax collectors and judges.
You need to specify where and when in history men attacked tax collectors if you want to make it possible to answer this question.
There were two tax collectors one was Matthew and the other was Zachaeus.
The Sons of Liberty tarred and feathered tax collectors as a form of protest against British taxation policies. This violent action was meant to intimidate tax collectors and discourage them from carrying out their duties.
We're not allowed to hate anyone except those who despise God.
A tax collector in ancient Rome was an "exactor".