I remember the stink caused in the congregation when the sweets 'Skittles' were released in the uk. they were advertised as containing 100% natural flavourings and colourings.
The problem was, the dye they used in the red skittles was cochineal. Cochineal is made by pulping the dried bodies of a mexican beetle and produces a vivid red colour that has been highly sought after in the past.
I'm not sure where the issue arose, but some bright spark decided it was against the blood policy to eat this as the beetles hadn't been bled before they were dried and crushed.
The congregation was in an uproar. I'm pretty sure there was never any formal anouncements about the point, but the elders when asked said it was a 'conscience decision'. People were scouring ingredients on foodstuffs in a religious fervour, convinced this was another satanic ploy to corrupt god's people. A sister in our group found cochineal in the dye on top of a bakewell tart, tried to scrape the icing off but 'the whole cake was just ruined, I had to throw the whole thing in the bin.' (I wonder what her unbelieving husband thought of this use of groceries?)
It finally came to a finish when one of the wiser sister's in the congregation, who'd kept respectively silent to avoid defending people, proclaimed the whole business ridiculous and asked if anyone seriously thought John the Baptist bled his locust with a pin before eating them in the wilderness.
Unbelievable.
Rush.