Why don't liberals support the protests in Iran?
Don't they?
It is the right of all people to speak out against their government. The government of Iran should respect this right and heed the voices of thousands of Iranians who are demonstrating across the country for better opportunities and a better future.
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Sen. Bernie Sanders tweeting on the matter. His tweet has ~20K likes and ~4500 retweets.
The West should stand clearly and unflinchingly on the side of those who are risking life and limb to protest for freedom.
#IranProtests
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Rep. Brendan Boyle tweeting on the matter
The fact of the matter is that for all intents and purposes, "real time" statements of position on foreign policy is, in the U.S., the exclusive purview of the POTUS and the executive branch of government; consequently, he must take some sort of potion on the matter, and it's nobody else's place to do so.
That doesn't mean others cannot have and air their opinions, but given the way the Constitution has arranged the foreign policy powers, those opinions that differ from the POTUS' don't matter as go things like the country's support for non-American's activities in their own countries.
Now, if the POTUS wants to spend money on behalf of or in support of foreign nation's protesters, that's a different matter altogether. If he's doing so by
providing material support to anti-government protesters/forces in a foreign nation, his doing so can very easily be considered an act of war by the government in power. Accordingly, while it's okay to voice support, going beyond "lip service" when the "natives are restive" in a foreign country, prudence requires a POTUS to exercise a very high degree of circumspection. You recall "Iran-Contra," don' t you? It's seditious to go beyond "lip service" delivered from within a head of state's own nation.
Think about it. What would be the U.S. response to another nation actively inciting and supporting, say, the BLM protesters? Whether one agrees with the BLM organization or doesn't, no foreign power has any business interfering one way or another with regard to BLM and its efforts. It's a domestic U.S. matter and just as we demand that other nations respect our sovereignty by not interfering, so too must we do with regard to other nations' domestic travails. That or be willing to risk American men, materiel and treasure as we did in Iraq, Afghanistan, Nicaragua, and other places.