an extremist to one person is a well intentioned and ethical person to another. If forcing views on someone through media, guilt, or other forms of communication ends some of the obscenely cruel treatment many people and companies direct towards animals then that's a necessary evil in my opinion.
That's just it. It's Your Opinion, which becomes an offense to others, when it is imposed without regard or imposed by decree. You have every right to your perspective on the fair and ethical treatment of Animals. Best to live by example and try to educate. Matters of Conscience belong to Each of Us, Individually, in part that translates to Us Not being able to force feed against Someones will. Government by the consent of the governed does have consequences, both good and bad. Stupidity is on the list.
Ideas, perspectives, political stances, and opinions are imposed on people every single day. Showing people the cruelty behind certain businesses and practices is free speech and in many cases necessary in my opinion.
Within reason. When reason is abandoned, one ends up doing more harm than good to their cause. You don't want to give your cause a black eye, nor your movement a bad reputation. Private Property, Privacy, are Unalienable Rights, when yours is under attack, I'm sure, you realize the injustice of the offending action. Even here, for Example, Graphic Images are Moderated, to Protect, not from reality, but, shock and hurt, among other things. Permanently Scaring the unsuspecting, with shock value, weighing against permanently slamming shut channels of communication as a result, serves what end.
Even now, your message of protecting animals against abuse, even more humane ways of animal slaughter, is side tracked by the discussion of why should you be permitted to say or do anything that you perceive will further a cause.