Xenophobia sounds like an ill

Xenophobia  sounds like an ill;
A disease  independent of will.
In animals  a defence
In humans some sense
As a stranger’s unpredictable still

Yet “phobia” sounds excessively strong
A defence over-done till it’s wrong.
Caution’s sufficient
When sense is deficient.
They’ll be sisters and brothers ere long.

As animals we don’t wish to share
The food and the money that’s here.
Better  ponder with care,
To see what is fair.
Or the ill-will  unleashed will  be bare.

Our natural instincts are tamed
Over-doing that makes us maimed
As Freud indicated
A theory vindicated
Sex labelled sin  has defamed.

Can  we  each find a good middle way
Which permits some fun and some play?
And enough intellect
To surely detect
Who is our real enemy?