if you own bank shares can the bank force a person to sell those shares

No company, bank or not, can force you to sell your "common" shares,
unless you're talking about a merger transaction, in which case, yes
they can. Like if they announce they're going to be acquired then yeah
you'd have to sell.


If you're talking about prefered shares, which you most likely are
not, it will depend on the terms of the original offering.
Hope that helps.

You need to look at the articles of incorporation for the bank (or any
company).  In some industries (like gaming), it is illegal for certain
people or entities to own shares in the company (or over a specified
amount of ownership).  This would be disclosed in the articles of
incorporation.

Other times, the shares may be callable (look at Dreyers and Nestle)
and the company will have the option to force you to sell the shares.

Sometimes, depending on which state the company is incorporated in,
you can ask for appraisal rights if there is a merger transaction and
you are not happy with the terms of the merger consideration.  In this
case, the proxy would disclose the rights you have (if any).