What is the worst thing a parent csn do to their child?

THE WORST THING A PARENT CAN DO TO THEIR CHILD IS TO TELL THEM THEY WISH THEY WASN'T BORN. PERSONALLY THAT HURTS MY HEART AND SOUL...BECAUSE IF YOU DIDN'T WON'T THEM WHY YOU HAVE THEM. I THINK PARENTS SHOULDN'T SAY THING LIKE THAT, THATS HOW KIDS HARM THEMSELVES THEN THE PARENTS CRYING TALKING ABOUT WHAT DID I DO WRONG I WAS A GOOD PARENT OR TRIED TO BE A GOOD PARENTS...THEY JUST DON'T KNOW THAT QUOTE KILLED THERE CHILD INSIDE. SO THEY SEE THERE'S NO REASON TO LIVE ANYMORE... THEN SOMETIMES PARENT SAY I HATE YOU, I DON'T WON'T YOU, OR I WISH YOU WAS DEAD...THAT AIN'T NO BETTER...THINK BEFORE YOU SPEAK..
PLUS, ANOTHER THING PARENTS CAN DO TO THEIR CHILD IS STOP BELIEVING IN THEIR CHILD HOPE'S AND DREAM'S....THE REASON YOUR CHILD GOES TO SCHOOL IS TO MAKE YOU HAPPY... OR WHEN THE PARENT SEE SOMEONE ELSE CHILD DOING GOOD IN SCHOOL.. THEY SAY I WISH MY CHILD BRING ME HOME A's AND B's...THEN WHEN YOU TRY YOU BRING HOME A's, B's AND ONE C...THEY STILL MAD AND WHY YOU GOT THIS C...YOU CAN DO BETTER THAN THIS...I WON'T A's AND B's NO C's, D's OR F's...DID YOU GET A's IN SCHOOL...YOU ARE NOT PREFECT OKAY...Mizz Lady... I HAVE A LOT TO SAY..SORRY PEOPLE....