[...]hates your guts for reasons [...]having kids, being "of the wrong race/nationality", etc[...]), colleagues follow suit -[...]

This is discrimination and bullying.

You should have reported incidents proving these statements to upper management and HR.

After repeated occurrences you have valid reasons to quit and the company would be fully aware of it.

Do you have records about you being discriminated or bullied? - Send them to HR and upper management, potentially contact a lawyer and consider filing a lawsuit.

Would you be willing to stay longer to gather such evidence? - Bide your time, report infractions and leave if things don't change or you have enough ammo for a lawsuit.

If you just want to quit, include any evidence of misconduct against you as reasons in your letter of resignation.

[...]hates your guts for reasons [...]having kids, being "of the wrong race/nationality", etc[...]), colleagues follow suit -[...]

This is discrimination and bullying.

You should have reported incidents proving these statements to upper management and HR.

After repeated occurrences you have valid reasons to quit and the company would be fully aware of it.

Do you have records about you being discriminated or bullied? - Send them to HR and upper management, potentially contact a lawyer and consider filing a lawsuit.

Would you be willing to stay longer to gather such evidence? - Bide your time, report infractions and leave if things don't change or you have enough ammo for a lawsuit.

If you just want to quit, include any evidence of misconduct against you as reasons in your letter of resignation.

Giving your opinion of hatred towards you without clear evidence weakens your statement considerably and may lose merit to the point of appearing to fish for reasons or having a grudge.

[...]hates your guts for reasons [...]having kids, being "of the wrong race/nationality", etc[...]), colleagues follow suit -[...]

This is discrimination and bullying.

You should have reported incidents proving these statements to upper management and HR.

After repeated occurrences you have valid reasons to quit and the company would be fully aware of it.

Do you have records about you being discriminated or bullied? - Send them to HR and upper management, potentially contact a lawyer and consider filing a lawsuit.

Would you be willing to stay longer to gather such evidence? - Bide your time, report infractions and leave if things don't change or you have enough ammo for a lawsuit.

If you don't want to do either, hand over any evidence you have as reasons for resigning.

[...]hates your guts for reasons [...]having kids, being "of the wrong race/nationality", etc[...]), colleagues follow suit -[...]

This is discrimination and bullying.

You should have reported incidents proving these statements to upper management and HR.

After repeated occurrences you have valid reasons to quit and the company would be fully aware of it.

Do you have records about you being discriminated or bullied? - Send them to HR and upper management, potentially contact a lawyer and consider filing a lawsuit.

Would you be willing to stay longer to gather such evidence? - Bide your time, report infractions and leave if things don't change or you have enough ammo for a lawsuit.

If you just want to quit, include any evidence of misconduct against you as reasons in your letter of resignation.