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Teamsters Local 688 on Twitter: "Never cross a picket line! #UnionStrong https://t.co/8AZyTw0rNL" / Twitter
![Striking social workers sang don't cross our picket line to the tune of the National Anthem when the Princess Royal arrived at Westminster City Hall in central London this morning (Tuesday). The Striking social workers sang don't cross our picket line to the tune of the National Anthem when the Princess Royal arrived at Westminster City Hall in central London this morning (Tuesday). The](https://c8.alamy.com/comp/G45GHE/striking-social-workers-sang-dont-cross-our-picket-line-to-the-tune-G45GHE.jpg)
Striking social workers sang don't cross our picket line to the tune of the National Anthem when the Princess Royal arrived at Westminster City Hall in central London this morning (Tuesday). The
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