Wrong. God disciplines his children, whom he does love and will ultimately adopt as his own, but that in no way suggests that God doesn't also express a love and desire for all mankind to come to faith and repentance.
Even Calvinists have historically taught that God indeed does love all mankind, but that he has special or more meaningful love relationship with those who do become his children. Now, we can debate HOW and WHY some become children of God (election/irresistible grace etc), but that doesn't change anything about the fact that God loves all people and that Calvinists have historically supported that position.