I largely agree with you Paul, yet broadbased sanctions on products manufactured on occupied territories is not going to happen in my lifetime, nor my kids for reasons we are all aware of.
You also know the sanctions on SA in the 60s were not comprehensive and a sham of note.
Yet in business you can chose who to do business with from a moral perspective, and as long as the company is aware of your reasoning and are having a financial hit to their business, it is more likely to make them change than to trying to discuss morality
Fully agreed and moreover I am am very much in favour
Freedom of Expression - even if disruptive. I am however a humanist (or hjumanist

)
This for me is really the issue. If you as a consumer are of the view that Woolworths entanglement in the sourcing of certain goods or services should be discontinued for reasons of principle I fully support your right to do so - moreover if you hold certain views it becomes incumbent upon you as a person of conscience to take some manner of action - and you may write to Woolworths or boycott their stores or do something as a matter of conscience. But you must act out of conscience and in good faith, trying to hijack* or hold randsom Woolworths to succumb to your demands as to how they do business is far from acting in good faith.
A letter addressed as follows:
Ms Rylands
I am writing to you in connection with my decision to discontinue making purchases at your stores. This decision has been a difficult one to make but I am unable in good conscience support your company due to its business relationships with X** who are a company in support of the oppressive Israeli regime. I hold it to be a moral duty to stand in solidarity with Palestinian civilians and hope and believe that concerted public effort to isolate the government of Israel through consumer boycotts will affect change and divestment from this brutal regime.
If you could kindly advise the various decision makers of Woolworths Holdings Ltd of this correspondence and other correspondence like it.
Yours Sincerely
Y
would in my view not only be more gentlemanly (regardless of gender) but also more likely to be effective - especially if it is an open letter or one circulated. The MD: Food receiving 100 such letters has a duty to report to the non-executive directors etc ...
What is more is that you can write to complain without boycotting the stores and threatening South African jobs. You can also request assurances as to how the produce is secured - what are the working conditions, is the company entangled in the IDF or is it pacifist Israeli business interests that will be hurt - people who provide medical support to Gaza.
And yes in medium sized contracts getting management to take a principle stand hits hard, but again I feel you have an ethical duty to make your position known vocally without violently - such as a principled letter.
The problem is that this particular divestment group - like sections of the ANC in the 80s - are not interested in bringing about positive change, they wish to be in charge; they are unfortunately quite filled with fascists who have found a cause rather than gentlemen of principle finding them self saying "here I stand, I cannot do otherwise"***.
* I am aware of the possible invocation of stereotypes here but have ultimately concluded that the term is apposite here
** I haven't bothered to research the exact hallabaloo
*** I am fully aware of the irony of quoting Martin Luther in this matter - both with his anti-Semitism and his peculiar approach towards Islam and liberal secularism