Why is it that an extended olive branch often turns to a clinched fist of hatred?

Why is it that an extended olive branch often turns to a clinched fist of hatred?

So we grew together,
Like to a double cherry, seeming parted,
But yet an union in partition--
read more

So we grew together,
Like to a double cherry, seeming parted,
But yet an union in partition--
Two lovely berries moulded on one stem;
So, with two seeming bodies, but one heart;
Two of the first, like coats in heraldry,
Due but to one, and crowned with one crest.

In union there is strength.

In union there is strength.

He that is not with me is against me: and he that gathereth not
with me scattereth.

He that is not with me is against me: and he that gathereth not
with me scattereth.

Their meetings made December June.
Their every parting was to die.

Their meetings made December June.
Their every parting was to die.

The universal subjugator, the commonplace.
[Ger., Was uns alle bandigt, das Gemeine.]

The universal subjugator, the commonplace.
[Ger., Was uns alle bandigt, das Gemeine.]

Then none was for a party;
Than all were for the state;
Then the great man helped read more

Then none was for a party;
Than all were for the state;
Then the great man helped the poor,
And the poor man loved the great:
Then lands were fairly portioned;
Then spoils were fairly sold:
The Romans were like brothers
In the brave days of old.

Be united--united--united.
[Ger., Seid einig--einig--einig.]

Be united--united--united.
[Ger., Seid einig--einig--einig.]

The Constitution in all its provisions looks to an indestructible
union disposed of indestructible States.

The Constitution in all its provisions looks to an indestructible
union disposed of indestructible States.