1895 White House Christmas Tree Lights

Origin
The White House Christmas Tree has become a well known Christmas tradition in the White house since at least the 1840's though the exact date of the first is a matter of debate. The tree that was erected during Grover Cleveland's third term was the first to have the now commertial electric Christmas or "fairy" lights. This time also saw many economic panics and labor unrest, perhaps leading to the string of light's honest nature.

Effects
When plugged in or charged with a sufficient amount of enerrgy, the lights become active and move in a serpentine fasion towards fakes, liars or frauds. It will proceed to wrap around and constrict the person or object, either killing or destroying it. If the target struggles, it can send off small sparks in an attempt to stun them.

Riddles, optical illusions and half-truths are noted to confuse it, and it may stop and take several minutes or even hours to decide how to proceed. It's known to get very active around Christmas and Spring Cleaning time, when electrical surges are at the highest.